How to use the pythonping.icmp.Types.EchoReply function in pythonping

def test_pack(self):
        """Verifies that creates the correct pack"""
        self.assertEqual(
            icmp.ICMP(icmp.Types.EchoReply, payload='banana', identifier=19700).packet,
            b'\x00\x00\xcb\x8e\xf4L\x01\x00banana',
            "Fail to pack ICMP structure to packet"
        )
        self.assertEqual(
            icmp.ICMP(icmp.Types.EchoReply, payload='random text goes here', identifier=12436).packet,
            b'\x00\x00h\xd1\x940\x01\x00random text goes here',
            "Fail to pack ICMP structure to packet"
        )
        self.assertEqual(
            icmp.ICMP(icmp.Types.EchoRequest, payload='random text goes here', identifier=18676).packet,
            b'\x08\x00\x00\xb9\xf4H\x01\x00random text goes here',
            "Fail to unpack ICMP structure to packet"
        )

def test_checksum_creation(self):
        """Verifies it generates the correct checksum, given packet data"""
        packet = icmp.ICMP(icmp.Types.EchoRequest, payload='random text goes here', identifier=16)
        self.assertEqual(packet.expected_checksum, 485, 'Checksum creation failed')
        packet = icmp.ICMP(icmp.Types.EchoReply, payload='foobar', identifier=11)
        self.assertEqual(packet.expected_checksum, 48060, 'Checksum creation failed')

def test_error_message(self):
        """Verifies error messages are presented correctly"""
        self.assertEqual(self.craft_response_of_type(icmp.Types.EchoReply).error_message, None,
                         'Generated error message when response was correct')
        self.assertEqual(self.craft_response_of_type(icmp.Types.DestinationUnreachable).error_message,
                         'Network Unreachable',
                         'Unable to classify a Network Unreachable error correctly')
        self.assertEqual(executor.Response(None, 0.1).error_message, 'No response',
                         'Unable to generate correct message when response is not received')
        pass

    def __init__(self, message_type=Types.EchoReply, payload=None, identifier=None):
        """Creates an ICMP packet

        :param message_type: Type of ICMP message to send
        :type message_type: Union[ICMPType, (int, int), int]
        :param payload: utf8 string or bytes payload
        :type payload: Union[str, bytes]
        :param identifier: ID of this ICMP packet
        :type identifier: int"""
        self.message_code = 0
        if issubclass(message_type, ICMPType):
            self.message_type = message_type.type_id
        elif isinstance(message_type, tuple):
            self.message_type = message_type[0]
            self.message_code = message_type[1]
        elif isinstance(message_type, int):
            self.message_type = message_type