<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def Struct(fields):
 # pylint: disable=invalid-name """Construct a struct parameter type description protobuf. :type fields: list of :class:`type_pb2.StructType.Field` :param fields: the fields of the struct :rtype: :class:`type_pb2.Type` :returns: the appropriate struct-type protobuf """

    return type_pb2.Type(
        code=type_pb2.STRUCT, struct_type=type_pb2.StructType(fields=fields)
    )