Added missing javadocs

fixes gh-148

docs/pom.xml

@@ -17,7 +17,8 @@
 		<!-- Comma separated list of whitelisted branches -->
 		<docs.whitelisted.branches>1.2.x,1.3.x,2.0.x,2.1.x</docs.whitelisted.branches>
 		<main.basedir>${basedir}/..</main.basedir>
-		<gmavenplus-plugin.version>1.6.1</gmavenplus-plugin.version>
+		<gmavenplus-plugin.version>1.8.1</gmavenplus-plugin.version>
+		<groovy.version>2.5.8</groovy.version>
 		<!-- We don't want to downloaded sources of our own project-->
 		<maven-dependency-plugin-for-docs.phase>none</maven-dependency-plugin-for-docs.phase>
 		<docs.resources.dir>${project.basedir}/src/main/</docs.resources.dir>
@@ -55,6 +56,12 @@
 			<artifactId>groovy-json</artifactId>
 			<scope>compile</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.codehaus.groovy</groupId>
+			<artifactId>groovy-all</artifactId>
+			<version>${groovy.version}</version>
+			<type>pom</type>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-test</artifactId>
@@ -99,6 +106,9 @@
 						<goals>
 							<goal>compile</goal>
 							<goal>addSources</goal>
+							<goal>generateStubs</goal>
+							<goal>generateTestStubs</goal>
+							<goal>groovydoc-jar</goal>
 						</goals>
 					</execution>
 				</executions>