How to use the pypsexec.rpc.PType function in pypsexec

b"\x22" \
               b"\x10\x00\x00\x00" \
               b"\x1c\x00" \
               b"\x00\x00" \
               b"\x01\x00\x00\x00" \
               b"\x20\x00\x00\x00" \
               b"\x00\x00" \
               b"\x00" \
               b"\x00" \
               b"\x02\x00\x00\x1c"
        data = actual.unpack(data)
        assert len(actual) == 28
        assert data == b""
        assert actual['rpc_vers'].get_value() == 5
        assert actual['rpc_vers_minor'].get_value() == 0
        assert actual['ptype'].get_value() == PType.FAULT
        assert actual['pfx_flags'].get_value() == 34
        assert actual['packed_drep'].pack() == b"\x10\x00\x00\x00"
        assert actual['frag_length'].get_value() == 28
        assert actual['auth_length'].get_value() == 0
        assert actual['call_id'].get_value() == 1
        assert actual['alloc_hint'].get_value() == 32
        assert actual['p_cont_id'].get_value() == 0
        assert actual['cancel_count'].get_value() == 0
        assert actual['reserved'].get_value() == 0
        assert actual['status'].get_value() == \
            FaultStatus.NCA_S_FAULT_ADDR_ERROR

b"\x10\x00\x00\x00" \
               b"\x2c\x00" \
               b"\x00\x00" \
               b"\x04\x00\x00\x00" \
               b"\x00\x00\x00\x00" \
               b"\x01\x00" \
               b"\x0a\x00" \
               b"\xff\xff\xff\xff\xff\xff\xff\xff" \
               b"\xff\xff\xff\xff\xff\xff\xff\xff" \
               b"\x01\x02\x03\x04"
        data = actual.unpack(data)
        assert len(actual) == 44
        assert data == b""
        assert actual['rpc_vers'].get_value() == 5
        assert actual['rpc_vers_minor'].get_value() == 0
        assert actual['ptype'].get_value() == PType.REQUEST
        assert actual['pfx_flags'].get_value() == 128
        assert actual['packed_drep'].pack() == b"\x10\x00\x00\x00"
        assert actual['frag_length'].get_value() == 44
        assert actual['auth_length'].get_value() == 0
        assert actual['call_id'].get_value() == 4
        assert actual['alloc_hint'].get_value() == 0
        assert actual['cont_id'].get_value() == 1
        assert actual['opnum'].get_value() == 10
        assert actual['object'].get_value() == b"\xff" * 16
        assert actual['stub_data'].get_value() == b"\x01\x02\x03\x04"
        assert actual['auth_verifier'].get_value() == b""

b"\x00\x00" \
               b"\x01" \
               b"\x00" \
               b"\x01" \
               b"\x00" \
               b"\xff\xff\xff\xff\xff\xff\xff\xff" \
               b"\xff\xff\xff\xff\xff\xff\xff\xff" \
               b"\x00\x00\x00\x00" \
               b"\xff\xff\xff\xff\xff\xff\xff\xff" \
               b"\xff\xff\xff\xff\xff\xff\xff\xff" \
               b"\x00\x00\x00\x00"
        actual.unpack(data)
        assert len(actual) == 72
        assert actual['rpc_vers'].get_value() == 5
        assert actual['rpc_vers_minor'].get_value() == 0
        assert actual['ptype'].get_value() == PType.BIND
        assert actual['pfx_flags'].get_value() == PFlags.PFC_MAYBE
        assert actual['packed_drep']['integer_character'].get_value() == \
            IntegerCharacterRepresentation.ASCII_LITTLE_ENDIAN
        assert actual['packed_drep']['floating_point'].get_value() == \
            FloatingPointRepresentation.IEEE
        assert actual['packed_drep']['reserved1'].get_value() == 0
        assert actual['packed_drep']['reserved2'].get_value() == 0
        assert actual['frag_length'].get_value() == 72
        assert actual['auth_length'].get_value() == 0
        assert actual['call_id'].get_value() == 4
        assert actual['max_xmit_frag'].get_value() == 4280
        assert actual['max_recv_frag'].get_value() == 4280
        assert actual['assoc_group_id'].get_value() == 2
        assert actual['n_context_elem'].get_value() == 1
        assert actual['reserved'].get_value() == 0
        assert actual['reserved2'].get_value() == 0

data = b"\x05" \
               b"\x00" \
               b"\x0d" \
               b"\x00" \
               b"\x10\x00\x00\x00" \
               b"\x15\x00" \
               b"\x00\x00" \
               b"\x04\x00\x00\x00" \
               b"\x02\x00" \
               b"\x01" \
               b"\x05\x00"
        data = actual.unpack(data)
        assert len(actual) == 21
        assert actual['rpc_vers'].get_value() == 5
        assert actual['rpc_vers_minor'].get_value() == 0
        assert actual['ptype'].get_value() == PType.BIND_NAK
        assert actual['pfx_flags'].get_value() == 0
        assert actual['packed_drep'].pack() == b"\x10\x00\x00\x00"
        assert actual['frag_length'].get_value() == 21
        assert actual['auth_length'].get_value() == 0
        assert actual['call_id'].get_value() == 4
        assert actual['provider_reject_reason'].get_value() == \
            BindNakReason.LOCAL_LIMIT_EXCEEDED
        assert actual['n_protocols'].get_value() == 1
        assert len(actual['p_protocols'].get_value()) == 1
        assert actual['p_protocols'][0] == 5

b"\x00" \
               b"\x10\x00\x00\x00" \
               b"\x1c\x00" \
               b"\x00\x00" \
               b"\x04\x00\x00\x00" \
               b"\x08\x00\x00\x00" \
               b"\x0c\x00" \
               b"\x01" \
               b"\x00" \
               b"\x01\x02\x03\x04"
        data = actual.unpack(data)
        assert len(actual) == 28
        assert data == b""
        assert actual['rpc_vers'].get_value() == 5
        assert actual['rpc_vers_minor'].get_value() == 0
        assert actual['ptype'].get_value() == PType.RESPONSE
        assert actual['pfx_flags'].get_value() == 0
        assert actual['packed_drep'].pack() == b"\x10\x00\x00\x00"
        assert actual['frag_length'].get_value() == 28
        assert actual['auth_length'].get_value() == 0
        assert actual['call_id'].get_value() == 4
        assert actual['alloc_hint'].get_value() == 8
        assert actual['cont_id'].get_value() == 12
        assert actual['cancel_count'].get_value() == 1
        assert actual['reserved'].get_value() == 0
        assert actual['stub_data'].get_value() == b"\x01\x02\x03\x04"
        assert actual['auth_verifier'].get_value() == b""

def __init__(self):
        self.fields = OrderedDict([
            ('rpc_vers', IntField(
                size=1,
                default=5
            )),
            ('rpc_vers_minor', IntField(size=1)),
            ('ptype', EnumField(
                size=1,
                enum_type=PType,
                default=PType.FAULT
            )),
            ('pfx_flags', FlagField(
                size=1,
                flag_type=PFlags
            )),
            ('packed_drep', StructureField(
                size=4,
                structure_type=DataRepresentationFormat
            )),
            ('frag_length', IntField(
                size=2,
                default=lambda s: len(s)
            )),
            ('auth_length', IntField(size=2)),
            ('call_id', IntField(size=4)),
            ('alloc_hint', IntField(size=4)),

def parse_pdu(data):
    """
    Converts the raw byte string of PDU data into a *PDU() structure. If the
    type is invalid or unknown to pypsexec it will throw a PDUException.

    :param data: The byte string returned in the buffer of the IOCTL response
    :return: *PDU() structure that is dependent on the type being parsed
    """
    type = struct.unpack("

def __init__(self):
        self.fields = OrderedDict([
            ('rpc_vers', IntField(
                size=1,
                default=5
            )),
            ('rpc_vers_minor', IntField(size=1)),
            ('ptype', EnumField(
                size=1,
                enum_type=PType,
                default=PType.REQUEST
            )),
            ('pfx_flags', FlagField(
                size=1,
                flag_type=PFlags
            )),
            ('packed_drep', StructureField(
                size=4,
                structure_type=DataRepresentationFormat
            )),
            ('frag_length', IntField(
                size=2,
                default=lambda s: len(s)
            )),
            ('auth_length', IntField(
                size=2,
                default=lambda s: len(s['auth_verifier'])

def __init__(self):
        self.fields = OrderedDict([
            ('rpc_vers', IntField(
                size=1,
                default=5
            )),
            ('rpc_vers_minor', IntField(
                size=1,
                default=0
            )),
            ('ptype', EnumField(
                size=1,
                enum_type=PType,
                default=PType.BIND
            )),
            ('pfx_flags', FlagField(
                size=1,
                flag_type=PFlags
            )),
            ('packed_drep', StructureField(
                size=4,
                structure_type=DataRepresentationFormat
            )),
            ('frag_length', IntField(
                size=2,
                default=lambda s: len(s)
            )),
            ('auth_length', IntField(
                size=2,
                default=lambda s: len(s['auth_verifier'])