How to use the erpc.codec.MessageInfo function in erpc

for _i1 in range(5):
                _v1 = codec.read_int32()
                _v0.append(_v1)

            matrix2.append(_v0)

        codec.end_read_message()

        # Invoke user implementation of remote function.
        self._handler.erpcMatrixMultiply(matrix1, matrix2, result_matrix)

        # Prepare codec for reply message.
        codec.reset()

        # Construct reply message.
        codec.start_write_message(erpc.codec.MessageInfo(
            type=erpc.codec.MessageType.kReplyMessage,
            service=interface.IMatrixMultiplyService.SERVICE_ID,
            request=interface.IMatrixMultiplyService.ERPCMATRIXMULTIPLY_ID,
            sequence=sequence))
        if result_matrix.value is None:
            raise ValueError("result_matrix is None")
        for _i0 in result_matrix.value:
            for _i1 in _i0:
                codec.write_int32(_i1)


        codec.end_write_message()

def erpcMatrixMultiply(self, matrix1, matrix2, result_matrix):
        assert type(result_matrix) is erpc.Reference, "out parameter must be a Reference object"

        # Build remote function invocation message.
        request = self._clientManager.create_request()
        codec = request.codec
        codec.start_write_message(erpc.codec.MessageInfo(
                type=erpc.codec.MessageType.kInvocationMessage,
                service=self.SERVICE_ID,
                request=self.ERPCMATRIXMULTIPLY_ID,
                sequence=request.sequence))
        if matrix1 is None:
            raise ValueError("matrix1 is None")
        for _i0 in matrix1:
            for _i1 in _i0:
                codec.write_int32(_i1)


        if matrix2 is None:
            raise ValueError("matrix2 is None")
        for _i0 in matrix2:
            for _i1 in _i0:
                codec.write_int32(_i1)