def add_files(self, filelist, **kwargs):
<EOL>if not isinstance(filelist, list):<EOL><INDENT>raise TypeError("<STR_LIT>")<EOL><DEDENT>for file in filelist:<EOL><INDENT>self.add_file(file)<EOL><DEDENT>
Append files to file repository.

        ModificationMonitor can append files to repository using this.
        Please put the list of file names to `filelist` argument.

        :param filelist: the list of file nmaes