#NEWLINE# @ classmethod #NEWLINE# def DeregisterHelper( cls , resolver_helper ) : #NEWLINE# #INDENT# 'Deregisters a path specification resolver helper.\n\n    Args:\n      resolver_helper: the resolver helper object (instance of\n                       ResolverHelper).\n\n    Raises:\n      KeyError: if resolver helper object is not set for the corresponding\n                type indicator.\n    ' #NEWLINE# if ( resolver_helper . type_indicator not in cls . _resolver_helpers ) : #NEWLINE# #INDENT# raise KeyError ( 'Resolver helper object not set for type indicator: {0:s}.' . format ( resolver_helper . type_indicator ) ) #NEWLINE# #UNINDENT# del cls . _resolver_helpers [ resolver_helper . type_indicator ]