def METHOD_NAME(self, message_type: MessageFlags, source: str = None) -> LinkData:
    """
    Create link data for this link.
    :param message_type: link data message type
    :param source: source for this data
    :return: link data
    """
    iface1_data = self.iface1.METHOD_NAME() if self.iface1 else None
    iface2_data = self.iface2.METHOD_NAME() if self.iface2 else None
    return LinkData(
        message_type=message_type,
        type=LinkTypes.WIRED,
        node1_id=self.node1.id,
        node2_id=self.node2.id,
        iface1=iface1_data,
        iface2=iface2_data,
        options=self.options(),
        label=self.label,
        color=self.color,
        source=source,
    )