Returns an object which is generated from a dict.

        Exception raises:
        KeyError -- Unknown match field is defined in dict

def from_jsondict(cls, dict_):
        """
        Returns an object which is generated from a dict.

        Exception raises:
        KeyError -- Unknown match field is defined in dict
        """
        fields = [ofproto.oxm_from_jsondict(f) for f
                  in dict_['oxm_fields']]
        return OFPMatch(_ordered_fields=fields)