diff --git a/headless-services/commons/commons-java/src/main/java/org/springframework/ide/vscode/commons/jandex/MethodImpl.java b/headless-services/commons/commons-java/src/main/java/org/springframework/ide/vscode/commons/jandex/MethodImpl.java
index 926fa85cf..21a7bdd30 100644
--- a/headless-services/commons/commons-java/src/main/java/org/springframework/ide/vscode/commons/jandex/MethodImpl.java
+++ b/headless-services/commons/commons-java/src/main/java/org/springframework/ide/vscode/commons/jandex/MethodImpl.java
@@ -11,6 +11,7 @@
 
 package org.springframework.ide.vscode.commons.jandex;
 
+import java.util.List;
 import java.util.stream.Stream;
 
 import org.jboss.jandex.MethodInfo;
@@ -23,6 +24,12 @@ import org.springframework.ide.vscode.commons.javadoc.IJavadoc;
 
 public class MethodImpl implements IMethod {
 
+	/**
+	 * Test code may set this to manually inject test data to make up for some missing 
+	 * capabilities of Jandex (e.g. discovering the names of method parameters).
+	 */
+	public static TestDataProvider testDataProvider = null;
+
 	private static final String JANDEX_CONTRUCTOR_NAME = "<init>";
 
 	private IType declaringType;
@@ -109,4 +116,13 @@ public class MethodImpl implements IMethod {
 		return method.toString();
 	}
 
+	@Override
+	public List<String> getParameterNames() {
+		if (testDataProvider!=null) {
+			return testDataProvider.getParameterNames(this);
+		} else {
+			throw new UnsupportedOperationException("Not supported with jandex");
+		}
+	}
+
 }
diff --git a/headless-services/commons/commons-java/src/main/java/org/springframework/ide/vscode/commons/jandex/TestDataProvider.java b/headless-services/commons/commons-java/src/main/java/org/springframework/ide/vscode/commons/jandex/TestDataProvider.java
new file mode 100644
index 000000000..8ece3aa1d
--- /dev/null
+++ b/headless-services/commons/commons-java/src/main/java/org/springframework/ide/vscode/commons/jandex/TestDataProvider.java
@@ -0,0 +1,37 @@
+/*******************************************************************************
+ * Copyright (c) 2020 Pivotal, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Pivotal, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.springframework.ide.vscode.commons.jandex;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.springframework.ide.vscode.commons.java.IMethod;
+import org.springframework.ide.vscode.commons.util.Assert;
+
+import com.google.common.collect.ImmutableList;
+
+public class TestDataProvider {
+
+	private Map<String, List<String>> methodParameters = new HashMap<>();
+	
+	public List<String> getParameterNames(IMethod method) {
+		String key = method.getBindingKey();
+		List<String> l = methodParameters.get(method.getBindingKey());
+		Assert.isLegal(l!=null, "Test code should provide method parameter names for '"+key+"'");;
+		return l;
+	}
+
+	public void methodParams(String bindingKey, String... names) {
+		methodParameters.put(bindingKey, ImmutableList.copyOf(names));
+	}
+
+}
diff --git a/headless-services/commons/commons-java/src/main/java/org/springframework/ide/vscode/commons/java/IMethod.java b/headless-services/commons/commons-java/src/main/java/org/springframework/ide/vscode/commons/java/IMethod.java
index f3469e4c6..7b536c51f 100644
--- a/headless-services/commons/commons-java/src/main/java/org/springframework/ide/vscode/commons/java/IMethod.java
+++ b/headless-services/commons/commons-java/src/main/java/org/springframework/ide/vscode/commons/java/IMethod.java
@@ -12,6 +12,7 @@
  *******************************************************************************/
 package org.springframework.ide.vscode.commons.java;
 
+import java.util.List;
 import java.util.stream.Stream;
 
 public interface IMethod extends IMember {
@@ -71,4 +72,6 @@ public interface IMethod extends IMember {
 		return getDeclaringType().classpathContainer();
 	}
 
+	List<String> getParameterNames();
+
 }
diff --git a/headless-services/commons/commons-java/src/main/java/org/springframework/ide/vscode/commons/jdtls/Wrappers.java b/headless-services/commons/commons-java/src/main/java/org/springframework/ide/vscode/commons/jdtls/Wrappers.java
index 300a1718f..292d003e7 100644
--- a/headless-services/commons/commons-java/src/main/java/org/springframework/ide/vscode/commons/jdtls/Wrappers.java
+++ b/headless-services/commons/commons-java/src/main/java/org/springframework/ide/vscode/commons/jdtls/Wrappers.java
@@ -333,6 +333,11 @@ public class Wrappers {
 				return data.isConstructor();
 			}
 
+			@Override
+			public List<String> getParameterNames() {
+				return data.getParameterNames();
+			}
+
 		};
 	}
 
diff --git a/headless-services/commons/commons-lsp-extensions/src/main/java/org/springframework/ide/vscode/commons/protocol/java/TypeData.java b/headless-services/commons/commons-lsp-extensions/src/main/java/org/springframework/ide/vscode/commons/protocol/java/TypeData.java
index f5f50687a..259488a17 100644
--- a/headless-services/commons/commons-lsp-extensions/src/main/java/org/springframework/ide/vscode/commons/protocol/java/TypeData.java
+++ b/headless-services/commons/commons-lsp-extensions/src/main/java/org/springframework/ide/vscode/commons/protocol/java/TypeData.java
@@ -313,6 +313,7 @@ public class TypeData extends TypeDescriptorData {
 		private boolean constructor;
 		private JavaTypeData returnType;
 		private List<JavaTypeData> parameters;
+		private List<String> parameterNames;
 		private List<AnnotationData> annotations;
 
 		public String getBindingKey() {
@@ -346,7 +347,7 @@ public class TypeData extends TypeDescriptorData {
 		public void setReturnType(JavaTypeData returnType) {
 			this.returnType = returnType;
 		}
-
+		
 		public List<JavaTypeData> getParameters() {
 			return parameters;
 		}
@@ -355,6 +356,14 @@ public class TypeData extends TypeDescriptorData {
 			this.parameters = parameters;
 		}
 
+		public List<String> getParameterNames() {
+			return parameterNames;
+		}
+
+		public void setParameterNames(List<String> parameterNames) {
+			this.parameterNames = parameterNames;
+		}
+
 		@Override
 		public int hashCode() {
 			final int prime = 31;
@@ -362,6 +371,7 @@ public class TypeData extends TypeDescriptorData {
 			result = prime * result + ((annotations == null) ? 0 : annotations.hashCode());
 			result = prime * result + ((bindingKey == null) ? 0 : bindingKey.hashCode());
 			result = prime * result + (constructor ? 1231 : 1237);
+			result = prime * result + ((parameterNames == null) ? 0 : parameterNames.hashCode());
 			result = prime * result + ((parameters == null) ? 0 : parameters.hashCode());
 			result = prime * result + ((returnType == null) ? 0 : returnType.hashCode());
 			return result;
@@ -388,6 +398,11 @@ public class TypeData extends TypeDescriptorData {
 				return false;
 			if (constructor != other.constructor)
 				return false;
+			if (parameterNames == null) {
+				if (other.parameterNames != null)
+					return false;
+			} else if (!parameterNames.equals(other.parameterNames))
+				return false;
 			if (parameters == null) {
 				if (other.parameters != null)
 					return false;
@@ -400,6 +415,5 @@ public class TypeData extends TypeDescriptorData {
 				return false;
 			return true;
 		}
-
 	}
 }
diff --git a/headless-services/jdt-ls-extension/org.springframework.tooling.jdt.ls.commons/src/org/springframework/tooling/jdt/ls/commons/java/JavaData.java b/headless-services/jdt-ls-extension/org.springframework.tooling.jdt.ls.commons/src/org/springframework/tooling/jdt/ls/commons/java/JavaData.java
index f633e5f45..2f911d249 100644
--- a/headless-services/jdt-ls-extension/org.springframework.tooling.jdt.ls.commons/src/org/springframework/tooling/jdt/ls/commons/java/JavaData.java
+++ b/headless-services/jdt-ls-extension/org.springframework.tooling.jdt.ls.commons/src/org/springframework/tooling/jdt/ls/commons/java/JavaData.java
@@ -237,6 +237,7 @@ public class JavaData {
 		data.setBindingKey(method.getKey());
 		ImmutableList.Builder<AnnotationData> annotationsBuilder = ImmutableList.builder();
 		ImmutableList.Builder<JavaTypeData> parametersBuilder = ImmutableList.builder();
+		ImmutableList.Builder<String> paramNamesBuilder = ImmutableList.builder();
 		try {
 			data.setConstructor(method.isConstructor());
 			data.setReturnType(createFromSignature(type, method.getReturnType()));
@@ -259,6 +260,14 @@ public class JavaData {
 		}
 		data.setAnnotations(annotationsBuilder.build());
 		data.setParameters(parametersBuilder.build());
+		try {
+			String[] paramNames = method.getParameterNames();
+			if (paramNames!=null) {
+				data.setParameterNames(ImmutableList.copyOf(paramNames));
+			}
+		} catch (JavaModelException e) {
+			//ignore.
+		}
 		return data;
 	}
 
diff --git a/headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/metadata/types/TypeUtil.java b/headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/metadata/types/TypeUtil.java
index ffc51a5bc..8d6d33170 100644
--- a/headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/metadata/types/TypeUtil.java
+++ b/headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/metadata/types/TypeUtil.java
@@ -49,6 +49,7 @@ import org.springframework.ide.vscode.commons.java.Flags;
 import org.springframework.ide.vscode.commons.java.IField;
 import org.springframework.ide.vscode.commons.java.IJavaElement;
 import org.springframework.ide.vscode.commons.java.IJavaProject;
+import org.springframework.ide.vscode.commons.java.IJavaType;
 import org.springframework.ide.vscode.commons.java.IMethod;
 import org.springframework.ide.vscode.commons.java.IType;
 import org.springframework.ide.vscode.commons.util.AlwaysFailingParser;
@@ -666,6 +667,7 @@ public class TypeUtil {
 
 	private static final Map<String, ValueProviderStrategy> VALUE_HINTERS = new HashMap<>();
 	private static final Object JL_OBJECT = Object.class.getName();
+	private static final String CONSTRUCTOR_BINDING = "org.springframework.boot.context.properties.ConstructorBinding";
 
 	static {
 		valueHints("java.nio.charset.Charset", new LazyProvider<String[]>() {
@@ -741,29 +743,57 @@ public class TypeUtil {
 			if (typeFromIndex != null) {
 				IJavaProject project = getJavaProject();
 				ArrayList<TypedProperty> properties = new ArrayList<>();
-				getGetterMethods(typeFromIndex).forEach(m -> {
-					Deprecation deprecation = DeprecationUtil.extract(m);
-					Type propType = null;
-					try {
-						propType = Type.fromJavaType(m.getReturnType());
-					} catch (Exception e) {
-						log.error("", e);
+				Optional<IMethod> constructorBinding = findConstructorBinding(typeFromIndex);
+				if (constructorBinding.isPresent()) {
+					IMethod c = constructorBinding.get();
+					List<IJavaType> types = c.parameters().collect(Collectors.toList());
+					List<String> params = c.getParameterNames();
+					int len = Math.min(params.size(), types.size());
+					for (int i = 0; i < len; i++) {
+						Deprecation deprecation = null;
+						properties.add(new TypedProperty(
+								StringUtil.camelCaseToHyphens(params.get(i)), 
+								Type.fromJavaType(types.get(i)), 
+								deprecation
+						));
 					}
-					if (beanMode.includesHyphenated()) {
-						properties.add(new TypedProperty(getterOrSetterNameToProperty(m.getElementName()), propType,
-								Renderables.lazy(() -> PropertyDocUtils.documentJavaElement(sourceLinks, project, m)), deprecation));
-					}
-					if (beanMode.includesCamelCase()) {
-						properties.add(new TypedProperty(getterOrSetterNameToCamelName(m.getElementName()), propType,
-								Renderables.lazy(() -> PropertyDocUtils.documentJavaElement(sourceLinks, project, m)), deprecation));
-					}
-				});
+					return properties;
+				} else {
+					getGetterMethods(typeFromIndex).forEach(m -> {
+						Deprecation deprecation = DeprecationUtil.extract(m);
+						Type propType = null;
+						try {
+							propType = Type.fromJavaType(m.getReturnType());
+						} catch (Exception e) {
+							log.error("", e);
+						}
+						if (beanMode.includesHyphenated()) {
+							properties.add(new TypedProperty(getterOrSetterNameToProperty(m.getElementName()), propType,
+									Renderables.lazy(() -> PropertyDocUtils.documentJavaElement(sourceLinks, project, m)), deprecation));
+						}
+						if (beanMode.includesCamelCase()) {
+							properties.add(new TypedProperty(getterOrSetterNameToCamelName(m.getElementName()), propType,
+									Renderables.lazy(() -> PropertyDocUtils.documentJavaElement(sourceLinks, project, m)), deprecation));
+						}
+					});
+				}
 				return properties;
 			}
 		}
 		return null;
 	}
 
+	private Optional<IMethod> findConstructorBinding(IType type) {
+		return type.getMethods()
+		.filter(m -> m.isConstructor())
+		.filter(m -> m.getAnnotations()
+				.anyMatch(annotation -> 
+					CONSTRUCTOR_BINDING.equals(annotation.getElementName()))
+		)
+		.findFirst();
+	}
+
+
 	/**
 	 * Registers a strategy for providing value hints with a given typeName.
 	 */
diff --git a/headless-services/spring-boot-language-server/src/test/java/org/springframework/ide/vscode/boot/test/ApplicationYamlEditorTest.java b/headless-services/spring-boot-language-server/src/test/java/org/springframework/ide/vscode/boot/test/ApplicationYamlEditorTest.java
index cae93b4a3..190216657 100644
--- a/headless-services/spring-boot-language-server/src/test/java/org/springframework/ide/vscode/boot/test/ApplicationYamlEditorTest.java
+++ b/headless-services/spring-boot-language-server/src/test/java/org/springframework/ide/vscode/boot/test/ApplicationYamlEditorTest.java
@@ -18,10 +18,13 @@ import static org.springframework.ide.vscode.boot.test.DefinitionLinkAsserts.met
 import static org.springframework.ide.vscode.languageserver.testharness.Editor.INDENTED_COMPLETION;
 
 import java.time.Duration;
+import java.util.HashMap;
 import java.util.Optional;
 
 import org.eclipse.lsp4j.Diagnostic;
 import org.eclipse.lsp4j.DiagnosticSeverity;
+import org.junit.After;
+import org.junit.Before;
 import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -44,6 +47,12 @@ import org.springframework.ide.vscode.languageserver.testharness.CodeAction;
 import org.springframework.ide.vscode.languageserver.testharness.Editor;
 import org.springframework.test.context.junit4.SpringRunner;
 
+import com.google.common.collect.ImmutableList;
+
+import org.springframework.ide.vscode.commons.jandex.MethodImpl;
+import org.springframework.ide.vscode.commons.jandex.TestDataProvider;
+
+
 /**
  * This class is a placeholder where we will attempt to copy and port
  * as many tests a possible from
@@ -68,8 +77,51 @@ public class ApplicationYamlEditorTest extends AbstractPropsEditorTest {
 		}
 	}
 
+	@Before
+	public void setup() {
+		MethodImpl.testDataProvider = new TestDataProvider();
+	}
+
+	@After
+	public void cleanups() {
+		MethodImpl.testDataProvider = null;
+	}
+	
 	////////////////////////////////////////////////////////////////////////////////////////
 	
+	@Test public void GH_404_ConsutructorBinding_support() throws Exception {
+		useProject(createPredefinedMavenProject("gh_404"));
+		Editor editor;
+		
+		MethodImpl.testDataProvider.methodParams("Ltest/NestedConfigProperties;.<init>(Ljava/lang/String;)V", "dude");
+		
+		editor = newEditor(
+				"someConfig:\n" + 
+				"  nested:\n" + 
+				"    <*>"
+		);
+		editor.assertCompletionLabels("dude"); //Only the property from constructor binding, not the one from setter!
+
+		editor = newEditor(
+				"some-config:\n" + 
+				"  nested:\n" + 
+				"    <*>"
+		);
+		editor.assertCompletionLabels("dude"); //Only the property from constructor binding, not the one from setter!
+
+		editor = newEditor(
+				"someConfig:\n" + 
+				"  nested:\n" + 
+				"    bob: bob\n" +
+				"    dude: dude\n" +
+				"    bogus: bad\n"
+		);
+		editor.assertProblems(
+				"bob|Unknown",
+				"bogus|Unknown"
+		);
+	}
+	
 	@Test public void abbreviateLongPrefixCompletions() throws Exception {
 		//See: https://github.com/spring-projects/sts4/issues/361
 		Editor editor;
diff --git a/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/.gitignore b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/.gitignore
new file mode 100644
index 000000000..a2a3040aa
--- /dev/null
+++ b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/.gitignore
@@ -0,0 +1,31 @@
+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**
+!**/src/test/**
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+
+### VS Code ###
+.vscode/
diff --git a/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/.mvn/wrapper/MavenWrapperDownloader.java b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/.mvn/wrapper/MavenWrapperDownloader.java
new file mode 100644
index 000000000..e76d1f324
--- /dev/null
+++ b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/.mvn/wrapper/MavenWrapperDownloader.java
@@ -0,0 +1,117 @@
+/*
+ * Copyright 2007-present the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import java.net.*;
+import java.io.*;
+import java.nio.channels.*;
+import java.util.Properties;
+
+public class MavenWrapperDownloader {
+
+    private static final String WRAPPER_VERSION = "0.5.6";
+    /**
+     * Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided.
+     */
+    private static final String DEFAULT_DOWNLOAD_URL = "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/"
+        + WRAPPER_VERSION + "/maven-wrapper-" + WRAPPER_VERSION + ".jar";
+
+    /**
+     * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to
+     * use instead of the default one.
+     */
+    private static final String MAVEN_WRAPPER_PROPERTIES_PATH =
+            ".mvn/wrapper/maven-wrapper.properties";
+
+    /**
+     * Path where the maven-wrapper.jar will be saved to.
+     */
+    private static final String MAVEN_WRAPPER_JAR_PATH =
+            ".mvn/wrapper/maven-wrapper.jar";
+
+    /**
+     * Name of the property which should be used to override the default download url for the wrapper.
+     */
+    private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl";
+
+    public static void main(String args[]) {
+        System.out.println("- Downloader started");
+        File baseDirectory = new File(args[0]);
+        System.out.println("- Using base directory: " + baseDirectory.getAbsolutePath());
+
+        // If the maven-wrapper.properties exists, read it and check if it contains a custom
+        // wrapperUrl parameter.
+        File mavenWrapperPropertyFile = new File(baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH);
+        String url = DEFAULT_DOWNLOAD_URL;
+        if(mavenWrapperPropertyFile.exists()) {
+            FileInputStream mavenWrapperPropertyFileInputStream = null;
+            try {
+                mavenWrapperPropertyFileInputStream = new FileInputStream(mavenWrapperPropertyFile);
+                Properties mavenWrapperProperties = new Properties();
+                mavenWrapperProperties.load(mavenWrapperPropertyFileInputStream);
+                url = mavenWrapperProperties.getProperty(PROPERTY_NAME_WRAPPER_URL, url);
+            } catch (IOException e) {
+                System.out.println("- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'");
+            } finally {
+                try {
+                    if(mavenWrapperPropertyFileInputStream != null) {
+                        mavenWrapperPropertyFileInputStream.close();
+                    }
+                } catch (IOException e) {
+                    // Ignore ...
+                }
+            }
+        }
+        System.out.println("- Downloading from: " + url);
+
+        File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH);
+        if(!outputFile.getParentFile().exists()) {
+            if(!outputFile.getParentFile().mkdirs()) {
+                System.out.println(
+                        "- ERROR creating output directory '" + outputFile.getParentFile().getAbsolutePath() + "'");
+            }
+        }
+        System.out.println("- Downloading to: " + outputFile.getAbsolutePath());
+        try {
+            downloadFileFromURL(url, outputFile);
+            System.out.println("Done");
+            System.exit(0);
+        } catch (Throwable e) {
+            System.out.println("- Error downloading");
+            e.printStackTrace();
+            System.exit(1);
+        }
+    }
+
+    private static void downloadFileFromURL(String urlString, File destination) throws Exception {
+        if (System.getenv("MVNW_USERNAME") != null && System.getenv("MVNW_PASSWORD") != null) {
+            String username = System.getenv("MVNW_USERNAME");
+            char[] password = System.getenv("MVNW_PASSWORD").toCharArray();
+            Authenticator.setDefault(new Authenticator() {
+                @Override
+                protected PasswordAuthentication getPasswordAuthentication() {
+                    return new PasswordAuthentication(username, password);
+                }
+            });
+        }
+        URL website = new URL(urlString);
+        ReadableByteChannel rbc;
+        rbc = Channels.newChannel(website.openStream());
+        FileOutputStream fos = new FileOutputStream(destination);
+        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
+        fos.close();
+        rbc.close();
+    }
+
+}
diff --git a/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/.mvn/wrapper/maven-wrapper.jar b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/.mvn/wrapper/maven-wrapper.jar
new file mode 100644
index 000000000..2cc7d4a55
Binary files /dev/null and b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/.mvn/wrapper/maven-wrapper.jar differ
diff --git a/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/.mvn/wrapper/maven-wrapper.properties b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/.mvn/wrapper/maven-wrapper.properties
new file mode 100644
index 000000000..642d572ce
--- /dev/null
+++ b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/.mvn/wrapper/maven-wrapper.properties
@@ -0,0 +1,2 @@
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.6.3/apache-maven-3.6.3-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar
diff --git a/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/mvnw b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/mvnw
new file mode 100755
index 000000000..a16b5431b
--- /dev/null
+++ b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/mvnw
@@ -0,0 +1,310 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Maven Start Up Batch script
+#
+# Required ENV vars:
+# ------------------
+#   JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+#   M2_HOME - location of maven2's installed home dir
+#   MAVEN_OPTS - parameters passed to the Java VM when running Maven
+#     e.g. to debug Maven itself, use
+#       set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+#   MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+  if [ -f /etc/mavenrc ] ; then
+    . /etc/mavenrc
+  fi
+
+  if [ -f "$HOME/.mavenrc" ] ; then
+    . "$HOME/.mavenrc"
+  fi
+
+fi
+
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+  MINGW*) mingw=true;;
+  Darwin*) darwin=true
+    # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
+    # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
+    if [ -z "$JAVA_HOME" ]; then
+      if [ -x "/usr/libexec/java_home" ]; then
+        export JAVA_HOME="`/usr/libexec/java_home`"
+      else
+        export JAVA_HOME="/Library/Java/Home"
+      fi
+    fi
+    ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=`java-config --jre-home`
+  fi
+fi
+
+if [ -z "$M2_HOME" ] ; then
+  ## resolve links - $0 may be a link to maven's home
+  PRG="$0"
+
+  # need this for relative symlinks
+  while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+      PRG="$link"
+    else
+      PRG="`dirname "$PRG"`/$link"
+    fi
+  done
+
+  saveddir=`pwd`
+
+  M2_HOME=`dirname "$PRG"`/..
+
+  # make it fully qualified
+  M2_HOME=`cd "$M2_HOME" && pwd`
+
+  cd "$saveddir"
+  # echo Using m2 at $M2_HOME
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --unix "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# For Mingw, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME="`(cd "$M2_HOME"; pwd)`"
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+  javaExecutable="`which javac`"
+  if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
+    # readlink(1) is not available as standard on Solaris 10.
+    readLink=`which readlink`
+    if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
+      if $darwin ; then
+        javaHome="`dirname \"$javaExecutable\"`"
+        javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
+      else
+        javaExecutable="`readlink -f \"$javaExecutable\"`"
+      fi
+      javaHome="`dirname \"$javaExecutable\"`"
+      javaHome=`expr "$javaHome" : '\(.*\)/bin'`
+      JAVA_HOME="$javaHome"
+      export JAVA_HOME
+    fi
+  fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+  if [ -n "$JAVA_HOME"  ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+    fi
+  else
+    JAVACMD="`which java`"
+  fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+  echo "Error: JAVA_HOME is not defined correctly." >&2
+  echo "  We cannot execute $JAVACMD" >&2
+  exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+  echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+
+  if [ -z "$1" ]
+  then
+    echo "Path not specified to find_maven_basedir"
+    return 1
+  fi
+
+  basedir="$1"
+  wdir="$1"
+  while [ "$wdir" != '/' ] ; do
+    if [ -d "$wdir"/.mvn ] ; then
+      basedir=$wdir
+      break
+    fi
+    # workaround for JBEAP-8937 (on Solaris 10/Sparc)
+    if [ -d "${wdir}" ]; then
+      wdir=`cd "$wdir/.."; pwd`
+    fi
+    # end of workaround
+  done
+  echo "${basedir}"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+  if [ -f "$1" ]; then
+    echo "$(tr -s '\n' ' ' < "$1")"
+  fi
+}
+
+BASE_DIR=`find_maven_basedir "$(pwd)"`
+if [ -z "$BASE_DIR" ]; then
+  exit 1;
+fi
+
+##########################################################################################
+# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+# This allows using the maven wrapper in projects that prohibit checking in binary data.
+##########################################################################################
+if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Found .mvn/wrapper/maven-wrapper.jar"
+    fi
+else
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
+    fi
+    if [ -n "$MVNW_REPOURL" ]; then
+      jarUrl="$MVNW_REPOURL/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+    else
+      jarUrl="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+    fi
+    while IFS="=" read key value; do
+      case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
+      esac
+    done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Downloading from: $jarUrl"
+    fi
+    wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
+    if $cygwin; then
+      wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"`
+    fi
+
+    if command -v wget > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found wget ... using wget"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            wget "$jarUrl" -O "$wrapperJarPath"
+        else
+            wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath"
+        fi
+    elif command -v curl > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found curl ... using curl"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            curl -o "$wrapperJarPath" "$jarUrl" -f
+        else
+            curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f
+        fi
+
+    else
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Falling back to using Java to download"
+        fi
+        javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
+        # For Cygwin, switch paths to Windows format before running javac
+        if $cygwin; then
+          javaClass=`cygpath --path --windows "$javaClass"`
+        fi
+        if [ -e "$javaClass" ]; then
+            if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Compiling MavenWrapperDownloader.java ..."
+                fi
+                # Compiling the Java class
+                ("$JAVA_HOME/bin/javac" "$javaClass")
+            fi
+            if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                # Running the downloader
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Running MavenWrapperDownloader.java ..."
+                fi
+                ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
+            fi
+        fi
+    fi
+fi
+##########################################################################################
+# End of extension
+##########################################################################################
+
+export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
+if [ "$MVNW_VERBOSE" = true ]; then
+  echo $MAVEN_PROJECTBASEDIR
+fi
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --path --windows "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+  [ -n "$MAVEN_PROJECTBASEDIR" ] &&
+    MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
+fi
+
+# Provide a "standardized" way to retrieve the CLI args that will
+# work with both Windows and non-Windows executions.
+MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
+export MAVEN_CMD_LINE_ARGS
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+exec "$JAVACMD" \
+  $MAVEN_OPTS \
+  -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+  "-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+  ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"
diff --git a/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/mvnw.cmd b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/mvnw.cmd
new file mode 100644
index 000000000..c8d43372c
--- /dev/null
+++ b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/mvnw.cmd
@@ -0,0 +1,182 @@
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    https://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Maven Start Up Batch script
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM M2_HOME - location of maven2's installed home dir
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM     e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM ----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM set title of command window
+title %0
+@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat"
+if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd"
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+
+FOR /F "tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+    IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
+)
+
+@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+@REM This allows using the maven wrapper in projects that prohibit checking in binary data.
+if exist %WRAPPER_JAR% (
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Found %WRAPPER_JAR%
+    )
+) else (
+    if not "%MVNW_REPOURL%" == "" (
+        SET DOWNLOAD_URL="%MVNW_REPOURL%/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+    )
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Couldn't find %WRAPPER_JAR%, downloading it ...
+        echo Downloading from: %DOWNLOAD_URL%
+    )
+
+    powershell -Command "&{"^
+		"$webclient = new-object System.Net.WebClient;"^
+		"if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
+		"$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
+		"}"^
+		"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^
+		"}"
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Finished downloading %WRAPPER_JAR%
+    )
+)
+@REM End of extension
+
+@REM Provide a "standardized" way to retrieve the CLI args that will
+@REM work with both Windows and non-Windows executions.
+set MAVEN_CMD_LINE_ARGS=%*
+
+%MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat"
+if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%" == "on" pause
+
+if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE%
+
+exit /B %ERROR_CODE%
diff --git a/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/pom.xml b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/pom.xml
new file mode 100644
index 000000000..6b2a92bf4
--- /dev/null
+++ b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/pom.xml
@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>2.2.5.RELEASE</version>
+		<relativePath /> <!-- lookup parent from repository -->
+	</parent>
+	<groupId>com.example</groupId>
+	<artifactId>gh_404</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<name>gh_404</name>
+	<description>Demo project for Spring Boot</description>
+
+	<properties>
+		<java.version>1.8</java.version>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-configuration-processor</artifactId>
+			<optional>true</optional>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+			<exclusions>
+				<exclusion>
+					<groupId>org.junit.vintage</groupId>
+					<artifactId>junit-vintage-engine</artifactId>
+				</exclusion>
+			</exclusions>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>
diff --git a/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/src/main/java/com/example/demo/Application.java b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/src/main/java/com/example/demo/Application.java
new file mode 100644
index 000000000..9b21b255e
--- /dev/null
+++ b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/src/main/java/com/example/demo/Application.java
@@ -0,0 +1,13 @@
+package com.example.demo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application {
+
+	public static void main(String[] args) {
+		SpringApplication.run(Application.class, args);
+	}
+
+}
diff --git a/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/src/main/java/test/ConfigProperties.java b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/src/main/java/test/ConfigProperties.java
new file mode 100644
index 000000000..839f32d61
--- /dev/null
+++ b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/src/main/java/test/ConfigProperties.java
@@ -0,0 +1,17 @@
+package test;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.boot.context.properties.ConstructorBinding;
+
+@ConfigurationProperties(prefix = "some-config")
+public class ConfigProperties {
+
+	public final NestedConfigProperties n1;
+	public final NestedConfigProperties n2;
+
+	@ConstructorBinding
+	public ConfigProperties(NestedConfigProperties nested, NestedConfigProperties nested2) {
+		this.n1 = nested;
+		this.n2 = nested;
+	}
+}
\ No newline at end of file
diff --git a/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/src/main/java/test/NestedConfigProperties.java b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/src/main/java/test/NestedConfigProperties.java
new file mode 100644
index 000000000..0097d63ad
--- /dev/null
+++ b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/src/main/java/test/NestedConfigProperties.java
@@ -0,0 +1,28 @@
+package test;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.boot.context.properties.ConstructorBinding;
+
+@ConfigurationProperties
+public class NestedConfigProperties {
+
+	private String dude;
+	private String bob;
+
+	@ConstructorBinding
+	public NestedConfigProperties(String dude) {
+		this.dude = dude;
+	}
+
+	public String getBob() {
+		return bob;
+	}
+
+	public void setBob(String bob) {
+		this.bob = bob;
+	}
+	
+	public String getDude() {
+		return dude;
+	}
+}
\ No newline at end of file
diff --git a/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/src/main/resources/application.yml b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/src/main/resources/application.yml
new file mode 100644
index 000000000..2463bfb52
--- /dev/null
+++ b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/src/main/resources/application.yml
@@ -0,0 +1,4 @@
+some-config:
+  nested:
+    dude: hello
+    bob: bbbba
diff --git a/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/src/test/java/com/example/demo/ApplicationTests.java b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/src/test/java/com/example/demo/ApplicationTests.java
new file mode 100644
index 000000000..70a27d2ce
--- /dev/null
+++ b/headless-services/spring-boot-language-server/src/test/resources/test-projects/gh_404/src/test/java/com/example/demo/ApplicationTests.java
@@ -0,0 +1,13 @@
+package com.example.demo;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class ApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}