diff --git a/build.gradle b/build.gradle
index d3ecc5e9..ec598de2 100644
--- a/build.gradle
+++ b/build.gradle
@@ -180,10 +180,6 @@ samples {
 	dependOn 'spring-restdocs-webtestclient:install'
 	dependOn 'spring-restdocs-asciidoctor:install'
 
-	restNotesGrails {
-		workingDir "$projectDir/samples/rest-notes-grails"
-	}
-
 	restNotesSpringHateoas {
 		workingDir "$projectDir/samples/rest-notes-spring-hateoas"
 	}
diff --git a/docs/src/docs/asciidoc/getting-started.adoc b/docs/src/docs/asciidoc/getting-started.adoc
index 8ce277be..b9a9ef4b 100644
--- a/docs/src/docs/asciidoc/getting-started.adoc
+++ b/docs/src/docs/asciidoc/getting-started.adoc
@@ -44,11 +44,6 @@ If you want to jump straight in, a number of sample applications are available:
 |===
 | Sample | Build system | Description
 
-| {samples}/rest-notes-grails[Grails]
-| Gradle
-| Demonstrates the use of Spring REST docs with https://grails.org[Grails] and
-  https://github.com/spockframework/spock[Spock].
-
 | {samples}/rest-assured[REST Assured]
 | Gradle
 | Demonstrates the use of Spring REST Docs with http://rest-assured.io[REST Assured].
diff --git a/samples/rest-notes-grails/.gitignore b/samples/rest-notes-grails/.gitignore
deleted file mode 100644
index 801345f8..00000000
--- a/samples/rest-notes-grails/.gitignore
+++ /dev/null
@@ -1,10 +0,0 @@
-.gradle
-build/
-classes/
-.idea
-*.iml
-*.ipr
-*.iws
-.project
-.settings
-.classpath
\ No newline at end of file
diff --git a/samples/rest-notes-grails/README.md b/samples/rest-notes-grails/README.md
deleted file mode 100644
index 0e62fb32..00000000
--- a/samples/rest-notes-grails/README.md
+++ /dev/null
@@ -1,93 +0,0 @@
-# rest-notes-grails
-
-## Overview
-
-This is a sample project using Grails 3, Spock, and Spring REST docs. For more
-information about the Grails framework please see [grails.org](https://grails.org).
-
-Grails is built on top of Spring Boot and Gradle so there are a few different ways to
-run this project including:
-
-### Gradle Wrapper (recommended)
-
-The gradle wrapper allows a project to build without having Gradle installed locally. The
-executable file will acquire the version of Gradle and other dependencies recommended for
-this project. This is especially important since some versions of Gradle may cause
-conflicts with this project.
-
-On Unix-like platforms, such as Linux and Mac OS X:
-
-```
-$ ./gradlew run
-```
-
-On Windows:
-
-```
-$ gradlew run
-```
-
-*Please note*, if you are including integration tests in Grails, they will not run as
-part of the `gradle test` task.  Run them via the build task or individually as
-`gradle integrationTest`
-
-### Gradle Command Line
-
-Clean the project:
-
-```
-$ gradle clean
-```
-
-Build the project:
-
-```
-$ gradle build
-```
-
-Run the project:
-
-```
-$ gradle run
-```
-
-### Grails Command Line
-
-Grails applications also have a command line feature useful for code generation and
-running projects locally. The  command line is accessible by typing `grails` in the
-terminal at the root of the project.  Please ensure you are running  the correct version
-of Grails as specified in [gradle.properties](gradle.properties)
-
-Similar to `gradle clean`, this task destroys the `build` directory and cached assets.
-
-```
-grails> clean
-```
-
-The 'test-app' task runs all of the tests for the project.
-
-```
-grails> test-app
-```
-
-The `run-app` task is used to run the application locally.  By default, the project is
-run in development mode including  automatic reloading and not caching static assets. It
-is not suggested to use this in production.
-
-```
-grails> run-app
-```
-
-### Building and Viewing the Docs
-
-This is an example of the Grails API profile.  Therefore, there is no view layer to
-return the docs as static assets.  The result of running `asciidoctor` or `build` is that
-the docs are sent to `/build/asciidoc/`.  You can then publish them to a destination of
-your choosing using the  [gradle github-pages](https://github.com/ajoberstar/gradle-git)
-plugin or similar.
-
-To just generate documentation and not run the application use:
-
-```
-$ ./gradlew asciidoctor
-```
diff --git a/samples/rest-notes-grails/build.gradle b/samples/rest-notes-grails/build.gradle
deleted file mode 100644
index 8af0afb7..00000000
--- a/samples/rest-notes-grails/build.gradle
+++ /dev/null
@@ -1,101 +0,0 @@
-buildscript {
-	repositories {
-		mavenCentral()
-		maven { url "https://repo.grails.org/grails/core" }
-	}
-	dependencies {
-		classpath "org.grails:grails-gradle-plugin:$grailsVersion"
-		classpath "org.grails.plugins:hibernate5:6.0.7"
-	}
-}
-
-plugins {
-	id 'org.asciidoctor.convert' version '1.5.3'
-}
-
-version "0.1"
-group "com.example"
-
-apply plugin: "war"
-apply plugin: "eclipse"
-apply plugin: "idea"
-apply plugin: "org.grails.grails-web"
-
-ext {
-	restDocsVersion = "2.0.4.BUILD-SNAPSHOT"
-	snippetsDir = file('src/docs/generated-snippets')
-}
-
-repositories {
-	mavenLocal()
-	maven { url 'https://repo.spring.io/libs-snapshot' }
-	maven { url "https://repo.grails.org/grails/core" }
-}
-
-dependencyManagement {
-	dependencies {
-		dependency "org.springframework.restdocs:spring-restdocs-core:$restDocsVersion"
-		dependency "org.springframework.restdocs:spring-restdocs-restassured:$restDocsVersion"
-		dependency "org.springframework.restdocs:spring-restdocs-asciidoctor:$restDocsVersion"
-	}
-	imports {
-		mavenBom "org.grails:grails-bom:$grailsVersion"
-	}
-	applyMavenExclusions false
-}
-
-dependencies {
-	asciidoctor "org.springframework.restdocs:spring-restdocs-asciidoctor"
-
-	compile "org.springframework.boot:spring-boot-starter-logging"
-	compile "org.springframework.boot:spring-boot-autoconfigure"
-	compile "org.springframework.boot:spring-boot-starter-actuator"
-	compile "org.springframework.boot:spring-boot-starter-tomcat"
-	compile "org.grails:grails-core"
-	compile "org.grails:grails-plugin-url-mappings"
-	compile "org.grails:grails-plugin-rest"
-	compile "org.grails:grails-plugin-codecs"
-	compile "org.grails:grails-plugin-interceptors"
-	compile "org.grails:grails-plugin-services"
-	compile "org.grails:grails-plugin-datasource"
-	compile "org.grails:grails-plugin-databinding"
-	compile "org.grails.plugins:async"
-	compile "org.grails:grails-web-boot"
-	compile "org.grails:grails-logging"
-	compile "org.grails.plugins:cache"
-	compile "org.grails.plugins:hibernate5"
-	compile "org.hibernate:hibernate-core:5.1.2.Final"
-	compile "org.hibernate:hibernate-ehcache:5.1.2.Final"
-	compile "org.grails.plugins:views-json"
-	compile "org.grails.plugins:views-json-templates"
-	console "org.grails:grails-console"
-
-	profile "org.grails.profiles:rest-api"
-
-	runtime "com.h2database:h2"
-	runtime 'org.apache.tomcat:tomcat-jdbc'
-
-	testCompile "io.rest-assured:rest-assured:3.0.2"
-	testCompile "org.grails:grails-test-mixins:3.3.0"
-	testCompile "org.grails.plugins:geb"
-	testCompile "org.grails:grails-datastore-rest-client"
-	testCompile "org.springframework.restdocs:spring-restdocs-restassured"
-
-	testRuntime "org.seleniumhq.selenium:selenium-htmlunit-driver:2.47.1"
-	testRuntime "net.sourceforge.htmlunit:htmlunit:2.18"
-}
-
-ext {
-	snippetsDir = file('build/generated-snippets')
-}
-
-test {
-	outputs.dir snippetsDir
-}
-
-asciidoctor {
-	dependsOn integrationTest
-	inputs.dir snippetsDir
-}
-
-build.dependsOn asciidoctor
diff --git a/samples/rest-notes-grails/gradle.properties b/samples/rest-notes-grails/gradle.properties
deleted file mode 100644
index edafcff0..00000000
--- a/samples/rest-notes-grails/gradle.properties
+++ /dev/null
@@ -1 +0,0 @@
-grailsVersion=3.3.9
diff --git a/samples/rest-notes-grails/gradle/wrapper/gradle-wrapper.jar b/samples/rest-notes-grails/gradle/wrapper/gradle-wrapper.jar
deleted file mode 100644
index 01b8bf6b..00000000
Binary files a/samples/rest-notes-grails/gradle/wrapper/gradle-wrapper.jar and /dev/null differ
diff --git a/samples/rest-notes-grails/gradle/wrapper/gradle-wrapper.properties b/samples/rest-notes-grails/gradle/wrapper/gradle-wrapper.properties
deleted file mode 100644
index 949819d2..00000000
--- a/samples/rest-notes-grails/gradle/wrapper/gradle-wrapper.properties
+++ /dev/null
@@ -1,5 +0,0 @@
-distributionBase=GRADLE_USER_HOME
-distributionPath=wrapper/dists
-zipStoreBase=GRADLE_USER_HOME
-zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.9-bin.zip
diff --git a/samples/rest-notes-grails/gradlew b/samples/rest-notes-grails/gradlew
deleted file mode 100755
index cccdd3d5..00000000
--- a/samples/rest-notes-grails/gradlew
+++ /dev/null
@@ -1,172 +0,0 @@
-#!/usr/bin/env sh
-
-##############################################################################
-##
-##  Gradle start up script for UN*X
-##
-##############################################################################
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-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"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >/dev/null
-APP_HOME="`pwd -P`"
-cd "$SAVED" >/dev/null
-
-APP_NAME="Gradle"
-APP_BASE_NAME=`basename "$0"`
-
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
-
-# Use the maximum available, or set MAX_FD != -1 to use that value.
-MAX_FD="maximum"
-
-warn () {
-    echo "$*"
-}
-
-die () {
-    echo
-    echo "$*"
-    echo
-    exit 1
-}
-
-# OS specific support (must be 'true' or 'false').
-cygwin=false
-msys=false
-darwin=false
-nonstop=false
-case "`uname`" in
-  CYGWIN* )
-    cygwin=true
-    ;;
-  Darwin* )
-    darwin=true
-    ;;
-  MINGW* )
-    msys=true
-    ;;
-  NONSTOP* )
-    nonstop=true
-    ;;
-esac
-
-CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
-
-# Determine the Java command to use to start the JVM.
-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
-    if [ ! -x "$JAVACMD" ] ; then
-        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
-
-Please set the JAVA_HOME variable in your environment to match the
-location of your Java installation."
-    fi
-else
-    JAVACMD="java"
-    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-
-Please set the JAVA_HOME variable in your environment to match the
-location of your Java installation."
-fi
-
-# Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
-    MAX_FD_LIMIT=`ulimit -H -n`
-    if [ $? -eq 0 ] ; then
-        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
-            MAX_FD="$MAX_FD_LIMIT"
-        fi
-        ulimit -n $MAX_FD
-        if [ $? -ne 0 ] ; then
-            warn "Could not set maximum file descriptor limit: $MAX_FD"
-        fi
-    else
-        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
-    fi
-fi
-
-# For Darwin, add options to specify how the application appears in the dock
-if $darwin; then
-    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
-fi
-
-# For Cygwin, switch paths to Windows format before running java
-if $cygwin ; then
-    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
-    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
-    JAVACMD=`cygpath --unix "$JAVACMD"`
-
-    # We build the pattern for arguments to be converted via cygpath
-    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
-    SEP=""
-    for dir in $ROOTDIRSRAW ; do
-        ROOTDIRS="$ROOTDIRS$SEP$dir"
-        SEP="|"
-    done
-    OURCYGPATTERN="(^($ROOTDIRS))"
-    # Add a user-defined pattern to the cygpath arguments
-    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
-        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
-    fi
-    # Now convert the arguments - kludge to limit ourselves to /bin/sh
-    i=0
-    for arg in "$@" ; do
-        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
-        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
-
-        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
-            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
-        else
-            eval `echo args$i`="\"$arg\""
-        fi
-        i=$((i+1))
-    done
-    case $i in
-        (0) set -- ;;
-        (1) set -- "$args0" ;;
-        (2) set -- "$args0" "$args1" ;;
-        (3) set -- "$args0" "$args1" "$args2" ;;
-        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
-        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
-        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
-        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
-        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
-        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
-    esac
-fi
-
-# Escape application args
-save () {
-    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
-    echo " "
-}
-APP_ARGS=$(save "$@")
-
-# Collect all arguments for the java command, following the shell quoting and substitution rules
-eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
-
-# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
-if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
-  cd "$(dirname "$0")"
-fi
-
-exec "$JAVACMD" "$@"
diff --git a/samples/rest-notes-grails/gradlew.bat b/samples/rest-notes-grails/gradlew.bat
deleted file mode 100644
index e95643d6..00000000
--- a/samples/rest-notes-grails/gradlew.bat
+++ /dev/null
@@ -1,84 +0,0 @@
-@if "%DEBUG%" == "" @echo off
-@rem ##########################################################################
-@rem
-@rem  Gradle startup script for Windows
-@rem
-@rem ##########################################################################
-
-@rem Set local scope for the variables with windows NT shell
-if "%OS%"=="Windows_NT" setlocal
-
-set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
-set APP_BASE_NAME=%~n0
-set APP_HOME=%DIRNAME%
-
-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS=
-
-@rem Find java.exe
-if defined JAVA_HOME goto findJavaFromJavaHome
-
-set JAVA_EXE=java.exe
-%JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto init
-
-echo.
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:findJavaFromJavaHome
-set JAVA_HOME=%JAVA_HOME:"=%
-set JAVA_EXE=%JAVA_HOME%/bin/java.exe
-
-if exist "%JAVA_EXE%" goto init
-
-echo.
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:init
-@rem Get command-line arguments, handling Windows variants
-
-if not "%OS%" == "Windows_NT" goto win9xME_args
-
-:win9xME_args
-@rem Slurp the command line arguments.
-set CMD_LINE_ARGS=
-set _SKIP=2
-
-:win9xME_args_slurp
-if "x%~1" == "x" goto execute
-
-set CMD_LINE_ARGS=%*
-
-:execute
-@rem Setup the command line
-
-set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
-
-@rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
-
-:end
-@rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
-
-:fail
-rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
-rem the _cmd.exe /c_ return code!
-if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
-exit /b 1
-
-:mainEnd
-if "%OS%"=="Windows_NT" endlocal
-
-:omega
diff --git a/samples/rest-notes-grails/grails-app/conf/application.yml b/samples/rest-notes-grails/grails-app/conf/application.yml
deleted file mode 100644
index 915c149a..00000000
--- a/samples/rest-notes-grails/grails-app/conf/application.yml
+++ /dev/null
@@ -1,100 +0,0 @@
----
-grails:
-    profile: rest-api
-    codegen:
-        defaultPackage: com.example
-info:
-    app:
-        name: '@info.app.name@'
-        version: '@info.app.version@'
-        grailsVersion: '@info.app.grailsVersion@'
-spring:
-    groovy:
-        template:
-            check-template-location: false
-
----
-grails:
-    mime:
-        disable:
-            accept:
-                header:
-                    userAgents:
-                        - Gecko
-                        - WebKit
-                        - Presto
-                        - Trident
-        types:
-            all: '*/*'
-            atom: application/atom+xml
-            css: text/css
-            csv: text/csv
-            form: application/x-www-form-urlencoded
-            html:
-              - text/html
-              - application/xhtml+xml
-            js: text/javascript
-            json:
-              - application/json
-              - text/json
-            multipartForm: multipart/form-data
-            rss: application/rss+xml
-            text: text/plain
-            hal:
-              - application/hal+json
-              - application/hal+xml
-            xml:
-              - text/xml
-              - application/xml
-    urlmapping:
-        cache:
-            maxsize: 1000
-    controllers:
-        defaultScope: singleton
-    converters:
-        encoding: UTF-8
-    hibernate:
-        cache:
-            queries: false
-
----
-dataSource:
-    pooled: true
-    jmxExport: true
-    driverClassName: org.h2.Driver
-    username: sa
-    password:
-
-environments:
-    development:
-        dataSource:
-            dbCreate: create-drop
-            url: jdbc:h2:mem:devDb;MVCC=TRUE;LOCK_TIMEOUT=10000;DB_CLOSE_ON_EXIT=FALSE
-    test:
-        dataSource:
-            dbCreate: update
-            url: jdbc:h2:mem:testDb;MVCC=TRUE;LOCK_TIMEOUT=10000;DB_CLOSE_ON_EXIT=FALSE
-        server:
-            port: 0
-    production:
-        dataSource:
-            dbCreate: update
-            url: jdbc:h2:./prodDb;MVCC=TRUE;LOCK_TIMEOUT=10000;DB_CLOSE_ON_EXIT=FALSE
-            properties:
-                jmxEnabled: true
-                initialSize: 5
-                maxActive: 50
-                minIdle: 5
-                maxIdle: 25
-                maxWait: 10000
-                maxAge: 600000
-                timeBetweenEvictionRunsMillis: 5000
-                minEvictableIdleTimeMillis: 60000
-                validationQuery: SELECT 1
-                validationQueryTimeout: 3
-                validationInterval: 15000
-                testOnBorrow: true
-                testWhileIdle: true
-                testOnReturn: false
-                jdbcInterceptors: ConnectionState
-                defaultTransactionIsolation: 2 # TRANSACTION_READ_COMMITTED
diff --git a/samples/rest-notes-grails/grails-app/conf/logback.groovy b/samples/rest-notes-grails/grails-app/conf/logback.groovy
deleted file mode 100644
index 41467f2a..00000000
--- a/samples/rest-notes-grails/grails-app/conf/logback.groovy
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright 2014-2016 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 grails.util.BuildSettings
-import grails.util.Environment
-
-// See https://logback.qos.ch/manual/groovy.html for details on configuration
-appender('STDOUT', ConsoleAppender) {
-	encoder(PatternLayoutEncoder) {
-		pattern = "%level %logger - %msg%n"
-	}
-}
-
-root(ERROR, ['STDOUT'])
-
-def targetDir = BuildSettings.TARGET_DIR
-if (Environment.isDevelopmentMode() && targetDir) {
-	appender("FULL_STACKTRACE", FileAppender) {
-		file = "${targetDir}/stacktrace.log"
-		append = true
-		encoder(PatternLayoutEncoder) {
-			pattern = "%level %logger - %msg%n"
-		}
-	}
-	logger("StackTrace", ERROR, ['FULL_STACKTRACE'], false)
-}
diff --git a/samples/rest-notes-grails/grails-app/conf/spring/resources.groovy b/samples/rest-notes-grails/grails-app/conf/spring/resources.groovy
deleted file mode 100644
index 4907ee43..00000000
--- a/samples/rest-notes-grails/grails-app/conf/spring/resources.groovy
+++ /dev/null
@@ -1,2 +0,0 @@
-// Place your Spring DSL code here
-beans = {}
diff --git a/samples/rest-notes-grails/grails-app/controllers/com/example/UrlMappings.groovy b/samples/rest-notes-grails/grails-app/controllers/com/example/UrlMappings.groovy
deleted file mode 100644
index e90d3ba0..00000000
--- a/samples/rest-notes-grails/grails-app/controllers/com/example/UrlMappings.groovy
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Copyright 2014-2017 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.
- */
-
-package com.example
-
-class UrlMappings {
-
-	static mappings = {
-		'/notes'(resources: 'note')
-
-		"500"(view: '/error')
-		"404"(view: '/notFound')
-	}
-
-}
diff --git a/samples/rest-notes-grails/grails-app/domain/com/example/Note.groovy b/samples/rest-notes-grails/grails-app/domain/com/example/Note.groovy
deleted file mode 100644
index bbff273d..00000000
--- a/samples/rest-notes-grails/grails-app/domain/com/example/Note.groovy
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright 2014-2016 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.
- */
-
-package com.example
-
-import grails.rest.Resource
-
-@Resource(uri='/notes')
-class Note {
-
-	Long id
-
-	String title
-
-	String body
-
-	static hasMany = [tags: Tag]
-
-	static mapping = {
-		tags joinTable: [name: "mm_notes_tags", key: 'mm_note_id' ]
-	}
-
-}
-
diff --git a/samples/rest-notes-grails/grails-app/domain/com/example/Tag.groovy b/samples/rest-notes-grails/grails-app/domain/com/example/Tag.groovy
deleted file mode 100644
index 72d2d272..00000000
--- a/samples/rest-notes-grails/grails-app/domain/com/example/Tag.groovy
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * Copyright 2014-2016 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.
- */
-
-package com.example
-
-import grails.rest.Resource
-
-@Resource(uri='/tags')
-class Tag {
-
-	Long id
-
-	String name
-
-	static hasMany = [notes: Note]
-
-	static belongsTo = Note
-
-	static mapping = {
-		notes joinTable: [name: "mm_notes_tags", key: 'mm_tag_id']
-	}
-
-}
diff --git a/samples/rest-notes-grails/grails-app/i18n/messages.properties b/samples/rest-notes-grails/grails-app/i18n/messages.properties
deleted file mode 100644
index b0451362..00000000
--- a/samples/rest-notes-grails/grails-app/i18n/messages.properties
+++ /dev/null
@@ -1,56 +0,0 @@
-default.doesnt.match.message=Property [{0}] of class [{1}] with value [{2}] does not match the required pattern [{3}]
-default.invalid.url.message=Property [{0}] of class [{1}] with value [{2}] is not a valid URL
-default.invalid.creditCard.message=Property [{0}] of class [{1}] with value [{2}] is not a valid credit card number
-default.invalid.email.message=Property [{0}] of class [{1}] with value [{2}] is not a valid e-mail address
-default.invalid.range.message=Property [{0}] of class [{1}] with value [{2}] does not fall within the valid range from [{3}] to [{4}]
-default.invalid.size.message=Property [{0}] of class [{1}] with value [{2}] does not fall within the valid size range from [{3}] to [{4}]
-default.invalid.max.message=Property [{0}] of class [{1}] with value [{2}] exceeds maximum value [{3}]
-default.invalid.min.message=Property [{0}] of class [{1}] with value [{2}] is less than minimum value [{3}]
-default.invalid.max.size.message=Property [{0}] of class [{1}] with value [{2}] exceeds the maximum size of [{3}]
-default.invalid.min.size.message=Property [{0}] of class [{1}] with value [{2}] is less than the minimum size of [{3}]
-default.invalid.validator.message=Property [{0}] of class [{1}] with value [{2}] does not pass custom validation
-default.not.inlist.message=Property [{0}] of class [{1}] with value [{2}] is not contained within the list [{3}]
-default.blank.message=Property [{0}] of class [{1}] cannot be blank
-default.not.equal.message=Property [{0}] of class [{1}] with value [{2}] cannot equal [{3}]
-default.null.message=Property [{0}] of class [{1}] cannot be null
-default.not.unique.message=Property [{0}] of class [{1}] with value [{2}] must be unique
-
-default.paginate.prev=Previous
-default.paginate.next=Next
-default.boolean.true=True
-default.boolean.false=False
-default.date.format=yyyy-MM-dd HH:mm:ss z
-default.number.format=0
-
-default.created.message={0} {1} created
-default.updated.message={0} {1} updated
-default.deleted.message={0} {1} deleted
-default.not.deleted.message={0} {1} could not be deleted
-default.not.found.message={0} not found with id {1}
-default.optimistic.locking.failure=Another user has updated this {0} while you were editing
-
-default.home.label=Home
-default.list.label={0} List
-default.add.label=Add {0}
-default.new.label=New {0}
-default.create.label=Create {0}
-default.show.label=Show {0}
-default.edit.label=Edit {0}
-
-default.button.create.label=Create
-default.button.edit.label=Edit
-default.button.update.label=Update
-default.button.delete.label=Delete
-default.button.delete.confirm.message=Are you sure?
-
-# Data binding errors. Use "typeMismatch.$className.$propertyName to customize (eg typeMismatch.Book.author)
-typeMismatch.java.net.URL=Property {0} must be a valid URL
-typeMismatch.java.net.URI=Property {0} must be a valid URI
-typeMismatch.java.util.Date=Property {0} must be a valid Date
-typeMismatch.java.lang.Double=Property {0} must be a valid number
-typeMismatch.java.lang.Integer=Property {0} must be a valid number
-typeMismatch.java.lang.Long=Property {0} must be a valid number
-typeMismatch.java.lang.Short=Property {0} must be a valid number
-typeMismatch.java.math.BigDecimal=Property {0} must be a valid number
-typeMismatch.java.math.BigInteger=Property {0} must be a valid number
-typeMismatch=Property {0} is type-mismatched
diff --git a/samples/rest-notes-grails/grails-app/init/com/example/Application.groovy b/samples/rest-notes-grails/grails-app/init/com/example/Application.groovy
deleted file mode 100644
index 86736fa4..00000000
--- a/samples/rest-notes-grails/grails-app/init/com/example/Application.groovy
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Copyright 2014-2016 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.
- */
-
-package com.example
-
-import grails.boot.GrailsApp
-import grails.boot.config.GrailsAutoConfiguration
-
-class Application extends GrailsAutoConfiguration {
-
-	static void main(String[] args) {
-		GrailsApp.run(Application, args)
-	}
-
-}
diff --git a/samples/rest-notes-grails/grails-app/init/com/example/BootStrap.groovy b/samples/rest-notes-grails/grails-app/init/com/example/BootStrap.groovy
deleted file mode 100644
index fd751b00..00000000
--- a/samples/rest-notes-grails/grails-app/init/com/example/BootStrap.groovy
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- * Copyright 2014-2016 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.
- */
-
-package com.example
-
-class BootStrap {
-
-	def init = { servletContext ->
-		environments {
-			test {
-				new Note(title: 'Hello, World!', body: 'Hello from the Integration Test').save()
-			}
-		}
-	}
-
-	def destroy = {}
-
-}
diff --git a/samples/rest-notes-grails/grails-app/views/error.gson b/samples/rest-notes-grails/grails-app/views/error.gson
deleted file mode 100644
index 314e80db..00000000
--- a/samples/rest-notes-grails/grails-app/views/error.gson
+++ /dev/null
@@ -1,6 +0,0 @@
-response.status 500
-
-json {
-    message "Internal server error"
-    error 500
-}
\ No newline at end of file
diff --git a/samples/rest-notes-grails/grails-app/views/notFound.gson b/samples/rest-notes-grails/grails-app/views/notFound.gson
deleted file mode 100644
index 1a710b26..00000000
--- a/samples/rest-notes-grails/grails-app/views/notFound.gson
+++ /dev/null
@@ -1,6 +0,0 @@
-response.status 404
-
-json {
-	message "Not Found"
-	error 404
-}
\ No newline at end of file
diff --git a/samples/rest-notes-grails/settings.gradle b/samples/rest-notes-grails/settings.gradle
deleted file mode 100644
index e69de29b..00000000
diff --git a/samples/rest-notes-grails/src/docs/asciidoc/index.adoc b/samples/rest-notes-grails/src/docs/asciidoc/index.adoc
deleted file mode 100644
index 72d379b4..00000000
--- a/samples/rest-notes-grails/src/docs/asciidoc/index.adoc
+++ /dev/null
@@ -1,98 +0,0 @@
-= Grails RESTful Notes API Guide
-Andy Wilkinson; Jenn Strater
-:doctype: book
-:icons: font
-:source-highlighter: highlightjs
-:toc: left
-:toclevels: 4
-:sectlinks:
-:operation-curl-request-title: Example request
-:operation-http-response-title: Example response
-
-[[overview]]
-= Overview
-
-[[overview-http-verbs]]
-== HTTP verbs
-
-Grails RESTful notes tries to adhere as closely as possible to standard HTTP and REST conventions in its
-use of HTTP verbs.
-
-|===
-| Verb | Usage
-
-| `GET`
-| Used to retrieve a resource
-
-| `POST`
-| Used to create a new resource
-
-| `PATCH`
-| Used to update an existing resource, including partial updates
-
-| `DELETE`
-| Used to delete an existing resource
-|===
-
-[[overview-http-status-codes]]
-== HTTP status codes
-
-Grails RESTful notes tries to adhere as closely as possible to standard HTTP and REST conventions in its
-use of HTTP status codes.
-
-|===
-| Status code | Usage
-
-| `200 OK`
-| The request completed successfully
-
-| `201 Created`
-| A new resource has been created successfully. The resource's URI is available from the response's
-`Location` header
-
-| `204 No Content`
-| An update to an existing resource has been applied successfully
-
-| `400 Bad Request`
-| The request was malformed. The response body will include an error providing further information
-
-| `404 Not Found`
-| The requested resource did not exist
-|===
-
-[[resources]]
-= Resources
-
-
-
-[[resources-notes]]
-== Notes
-
-The Notes resources is used to create and list notes
-
-
-
-[[resources-notes-list]]
-=== Listing notes
-
-A `GET` request will list all of the service's notes.
-
-operation::notes-list-example[snippets='response-fields,curl-request,http-response']
-
-
-
-[[resources-notes-create]]
-=== Creating a note
-
-A `POST` request is used to create a note
-
-operation::notes-create-example[snippets='request-fields,curl-request,http-response']
-
-
-
-[[resources-note-retrieve]]
-=== Retrieve a note
-
-A `GET` request will retrieve the details of a note
-
-operation::note-get-example[snippets='response-fields,curl-request,http-response']
diff --git a/samples/rest-notes-grails/src/integration-test/groovy/com/example/ApiDocumentationSpec.groovy b/samples/rest-notes-grails/src/integration-test/groovy/com/example/ApiDocumentationSpec.groovy
deleted file mode 100644
index 0514f84b..00000000
--- a/samples/rest-notes-grails/src/integration-test/groovy/com/example/ApiDocumentationSpec.groovy
+++ /dev/null
@@ -1,138 +0,0 @@
-/*
- * Copyright 2014-2017 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.
- */
-
-package com.example
-
-import org.springframework.restdocs.payload.JsonFieldType
-
-import static io.restassured.RestAssured.given
-import static org.hamcrest.CoreMatchers.is
-import static org.springframework.restdocs.operation.preprocess.Preprocessors.preprocessRequest
-import static org.springframework.restdocs.operation.preprocess.Preprocessors.preprocessResponse
-import static org.springframework.restdocs.operation.preprocess.Preprocessors.prettyPrint
-import static org.springframework.restdocs.payload.PayloadDocumentation.fieldWithPath
-import static org.springframework.restdocs.payload.PayloadDocumentation.requestFields
-import static org.springframework.restdocs.payload.PayloadDocumentation.responseFields
-import static org.springframework.restdocs.payload.PayloadDocumentation.subsectionWithPath
-import static org.springframework.restdocs.restassured3.operation.preprocess.RestAssuredPreprocessors.modifyUris
-import static org.springframework.restdocs.restassured3.RestAssuredRestDocumentation.document
-import static org.springframework.restdocs.restassured3.RestAssuredRestDocumentation.documentationConfiguration
-
-import io.restassured.builder.RequestSpecBuilder
-import io.restassured.specification.RequestSpecification
-import grails.test.mixin.integration.Integration
-import grails.transaction.Rollback
-import org.junit.Rule
-import org.springframework.beans.factory.annotation.Value
-import org.springframework.http.MediaType
-import org.springframework.restdocs.JUnitRestDocumentation
-import spock.lang.Specification
-
-@Integration
-@Rollback
-class ApiDocumentationSpec extends Specification {
-
-	@Rule
-	JUnitRestDocumentation restDocumentation = new JUnitRestDocumentation()
-
-	@Value('${local.server.port}')
-	Integer serverPort
-
-	protected RequestSpecification documentationSpec
-
-	void setup() {
-		this.documentationSpec = new RequestSpecBuilder()
-				.addFilter(documentationConfiguration(restDocumentation))
-				.build()
-	}
-
-	void 'test and document notes list request'() {
-		expect:
-		given(this.documentationSpec)
-				.accept(MediaType.APPLICATION_JSON.toString())
-				.filter(document('notes-list-example',
-				preprocessRequest(modifyUris()
-						.host('api.example.com')
-						.removePort()),
-				preprocessResponse(prettyPrint()),
-				responseFields(
-					fieldWithPath('[].id').description('the id of the note'),
-					fieldWithPath('[].title').description('the title of the note'),
-					fieldWithPath('[].body').description('the body of the note'),
-					fieldWithPath('[].tags').type(JsonFieldType.ARRAY).description('the list of tags associated with the note'),
-				)))
-				.when()
-				.port(this.serverPort)
-				.get('/notes')
-				.then()
-				.assertThat()
-				.statusCode(is(200))
-	}
-
-	void 'test and document create new note'() {
-		expect:
-		given(this.documentationSpec)
-				.accept(MediaType.APPLICATION_JSON.toString())
-				.contentType(MediaType.APPLICATION_JSON.toString())
-				.filter(document('notes-create-example',
-				preprocessRequest(modifyUris()
-						.host('api.example.com')
-						.removePort()),
-				preprocessResponse(prettyPrint()),
-				requestFields(
-						fieldWithPath('title').description('the title of the note'),
-						fieldWithPath('body').description('the body of the note'),
-						subsectionWithPath('tags').type(JsonFieldType.ARRAY).description('a list of tags associated to the note')
-				),
-				responseFields(
-					fieldWithPath('id').description('the id of the note'),
-					fieldWithPath('title').description('the title of the note'),
-					fieldWithPath('body').description('the body of the note'),
-					subsectionWithPath('tags').type(JsonFieldType.ARRAY).description('the list of tags associated with the note')
-				)))
-				.body('{ "body": "My test example", "title": "Eureka!", "tags": [{"name": "testing123"}] }')
-				.when()
-				.port(this.serverPort)
-				.post('/notes')
-				.then()
-				.assertThat()
-				.statusCode(is(201))
-	}
-
-	void 'test and document getting specific note'() {
-		expect:
-		given(this.documentationSpec)
-				.accept(MediaType.APPLICATION_JSON.toString())
-				.filter(document('note-get-example',
-				preprocessRequest(modifyUris()
-						.host('api.example.com')
-						.removePort()),
-				preprocessResponse(prettyPrint()),
-				responseFields(
-					fieldWithPath('id').description('the id of the note'),
-					fieldWithPath('title').description('the title of the note'),
-					fieldWithPath('body').description('the body of the note'),
-					fieldWithPath('tags').type(JsonFieldType.ARRAY).description('the list of tags associated with the note'),
-				)))
-				.when()
-				.port(this.serverPort)
-				.get('/notes/1')
-				.then()
-				.assertThat()
-				.statusCode(is(200))
-	}
-
-}