OutputType Filter not implemented for Compilation Unit output type

As per the code snippet from JDTBasedSpoonCompiler, the output type filter is not considered for compilation unit. For the sniper mode printing , the output type is internally configured as compilation unit. I am using a maven project with Maven Launcher and only interested in outputing the modified compilation unit to the ouput folder. Currently , all the input files are populated in the ouput folder too which is not correct.
`@Override
public void generateProcessedSourceFiles(OutputType outputType, Filter> typeFilter) {
getEnvironment().getSpoonProgress().start(SpoonProgress.Process.PRINT);
switch (outputType) {
case CLASSES:
generateProcessedSourceFilesUsingTypes(typeFilter);
break;
case COMPILATION_UNITS:
generateProcessedSourceFilesUsingCUs();
break;
case NO_OUTPUT:
}
getEnvironment().getSpoonProgress().end(SpoonProgress.Process.PRINT);
}`