<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def init_argparser_loaderplugin_registry( self, argparser, default=None, help=( 'the name of the registry to use for the handling of loader ' 'plugins that may be loaded from the given Python packages' )):
 """ Default helper for setting up the loaderplugin registries flags. Note that this is NOT part of the init_argparser due to implementation specific requirements. Subclasses should consider modifying the default value help message to cater to the toolchain it encapsulates. """


        argparser.add_argument(
            '--loaderplugin-registry', default=default,
            dest=CALMJS_LOADERPLUGIN_REGISTRY_NAME, action='store',
            metavar=metavar('registry'),
            help=help,
        )