code: @SuppressWarnings("static-method")
  	protected void internalExecute(File sourceFolder, File inputFile, File relativeInputFile, File outputFolder,
  			AbstractMarkerLanguageParser parser)
  			throws IOException {
  		throw new UnsupportedOperationException();
  	}
docs: Execute the mojo on the given set of files.
  
  @param sourceFolder the source folder.
  @param inputFile the input file.
  @param relativeInputFile the name of the input file relatively to the source folder.
  @param outputFolder the output folder.
  @param parser the parser to be used for reading the input file.
  @throws IOException if there is some issue with IO.