@staticmethod<EOL><INDENT>def verify(path):<DEDENT>
valid = True<EOL>fifo = SeriesFolder._search_files(path)<EOL>if len(fifo) == <NUM_LIT:0>:<EOL><INDENT>valid = False<EOL><DEDENT>fifmts = [ff[<NUM_LIT:1>] for ff in fifo]<EOL>if len(set(fifmts)) != <NUM_LIT:1>:<EOL><INDENT>valid = False<EOL><DEDENT>return valid<EOL>
Verify folder file format

        The folder file format is only valid when
        there is only one file format present.