fixed javadoc

git-svn-id: https://svn.apache.org/repos/asf/maven/shared/trunk@1597305 13f79535-47bb-0310-9956-ffa450edef68
refactored code to better show the logic

git-svn-id: https://svn.apache.org/repos/asf/maven/shared/trunk@1597312 13f79535-47bb-0310-9956-ffa450edef68
simplified output

git-svn-id: https://svn.apache.org/repos/asf/maven/shared/trunk@1597313 13f79535-47bb-0310-9956-ffa450edef68