code: async def send_rpc(self, conn_id, address, rpc_id, payload, timeout):
          
  
          adapter_id = self._get_property(conn_id, 'adapter')
          return await self.adapters[adapter_id].send_rpc(conn_id, address, rpc_id, payload, timeout)
docs: Send an RPC to a device.
  
          See :meth:`AbstractDeviceAdapter.send_rpc`.