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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def init_argparser_source_registry( self, argparser, default=None, help=( 'comma separated list of registries to use for gathering ' 'JavaScript sources from the given Python packages' )):
 """ For setting up the source registry flag. """


        argparser.add_argument(
            '--source-registry', default=default,
            dest=CALMJS_MODULE_REGISTRY_NAMES, action=StoreDelimitedList,
            metavar='<registry>[,<registry>[...]]',
            help=help,
        )

        argparser.add_argument(
            '--source-registries', default=default,
            dest=CALMJS_MODULE_REGISTRY_NAMES, action=StoreDelimitedList,
            help=SUPPRESS,
        )