Introduce getDeclaredMethods() for MethodMetadata of all user-declared methods

Closes gh-27701

spring-core/src/test/java/org/springframework/core/type/AnnotationMetadataTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 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.
@@ -397,6 +397,7 @@ class AnnotationMetadataTests {
 	}
 
 	private void doTestMethodAnnotationInfo(AnnotationMetadata classMetadata) {
+		assertThat(classMetadata.getDeclaredMethods()).hasSize(3);
 		Set<MethodMetadata> methods = classMetadata.getAnnotatedMethods(TestAutowired.class.getName());
 		assertThat(methods).hasSize(1);
 		for (MethodMetadata methodMetadata : methods) {
@@ -503,6 +504,9 @@ class AnnotationMetadataTests {
 	@NamedComposedAnnotation
 	private static class AnnotatedComponent implements Serializable {
 
+		public AnnotatedComponent() {
+		}
+
 		@TestAutowired
 		public void doWork(@TestQualifier("myColor") java.awt.Color color) {
 		}