def add_stitch_arguments(parser):
    """
    Add arguments to a parser for sub-command "stitch"
    :param parser: argeparse object
    :return:
    """
    parser.add_argument('-i', '--input_dir', type=str, required=True, help=
        '[REQUIRED] Path to a directory containing prediction files call consensus.'
        )
    parser.add_argument('-o', '--output_dir', type=str, required=True, help
        ='[REQUIRED] Path to the output directory.')
    parser.add_argument('-t', '--threads', type=int, required=True, help=
        '[REQUIRED] Number of threads.')
    parser.add_argument('-p', '--output_prefix', type=str, required=False,
        default='HELEN_consensus', help=
        'Prefix for the output file. Default is: HELEN_consensus')
