How to use the xknx.knxip.hpai.HPAI function in xknx

def __init__(self, xknx):
        """Initialize ConnectRequest object."""
        super().__init__(xknx)
        self.request_type = None
        self.control_endpoint = HPAI()
        self.data_endpoint = HPAI()
        # KNX layer, 0x02 = TUNNEL_LINKLAYER
        self.flags = 0x02

def __init__(self, xknx):
        """Initialize ConnectRequest object."""
        super().__init__(xknx)
        self.request_type = None
        self.control_endpoint = HPAI()
        self.data_endpoint = HPAI()
        # KNX layer, 0x02 = TUNNEL_LINKLAYER
        self.flags = 0x02

def __init__(self, xknx):
        """Initialize DisconnectRequest object."""
        super().__init__(xknx)

        self.communication_channel_id = 1
        self.control_endpoint = HPAI()

def calculated_length(self):
        """Get length of KNX/IP body."""
        return 2 + HPAI.LENGTH

def __init__(self, xknx):
        """Initialize SearchRequest object."""
        super().__init__(xknx)
        self.discovery_endpoint = HPAI(ip_addr="224.0.23.12", port=3671)

def calculated_length(self):
        """Get length of KNX/IP body."""
        return HPAI.LENGTH

def calculated_length(self):
        """Get length of KNX/IP body."""
        return 2 + HPAI.LENGTH + \
            ConnectResponse.CRD_LENGTH

def calculated_length(self):
        """Get length of KNX/IP body."""
        return 2 + HPAI.LENGTH

def __init__(self, xknx):
        """Initialize SearchResponse object."""
        super().__init__(xknx)
        self.control_endpoint = HPAI()
        self.dibs = []