@Override
    public MessageState getState() {
        return MessageState.PROXY_CONFIG_MESSAGE_STATE;
    }
Constructs the ProxyConfigMessageState for sending/receiving proxy configuration messages

@param src                Source address
@param dst                Destination address
@param meshMessage        {@link MeshMessage} Mesh proxy config message
@param meshTransport      {@link MeshTransport} Mesh transport
@param handlerCallbacks   {@link InternalMeshMsgHandlerCallbacks} callbacks
@param transportCallbacks {@link InternalTransportCallbacks} callbacks
@param statusCallbacks    {@link MeshStatusCallbacks} callbacks
mesh/src/main/java/no/nordicsemi/android/mesh/transport/ProxyConfigMessageState.java