question: public static void generateExtensionManager ( File rootFolder ) throws IOException { File extManager = new File ( rootFolder , EXT_MANAGER_PATH ) ; StringBuilder builder = new StringBuilder ( ) ; builder . append ( "package " + "org.eclipse.che.ide.client;\n\n" ) ; generateImports ( builder ) ; generateClass ( builder ) ; FileUtils . writeStringToFile ( extManager , builder . toString ( ) ) ; }
target:  Generate to source of the Class