#NEWLINE# def __init__( self , fn , obj = None , details_arg = None ) : #NEWLINE# #INDENT# '\n\n        :param fn: The endpoint procedure to be called.\n        :type fn: callable\n        :param obj: The (optional) object upon which to call the function.\n        :type obj: obj or None\n        :param details_arg: The keyword argument under which call details should be provided.\n        :type details_arg: str or None\n        ' #NEWLINE# self . fn = fn #NEWLINE# self . obj = details_arg #NEWLINE# self . details_arg = details_arg