code: @SuppressWarnings( "unchecked" )
      protected List<String> getSourceDirectories()
      {
          List<String> sourceDirectories = new ArrayList<String>();
          sourceDirectories.addAll( project.getCompileSourceRoots() );
          sourceDirectories.addAll( project.getTestCompileSourceRoots() );
          return sourceDirectories;
      }
docs: Get the directories containg sources