DefaultResponse creates the default response.

APIMajorVersion is returned as part of the Status.Version request.

APIMinorVersion is returned as part of the Status.Version request.

IgnoreUnknownTypeFlag is set along with a MessageType to indicate that the message type can be safely ignored if it is not recognized.

GenericRequest is used to request where no specific information is needed.

GenericResponse is used to respond to a request where no specific response information is needed.

QueryMeta allows a query response to include potentially useful metadata about a query.

QueryOptions is used to specify various flags for read queries.

Response http/rpc response.

VersionResponse is used for the Status.Version response.

WriteMeta allows a write response to include potentially useful metadata about the write.

RPCInfo is used to describe common information about query.

MessageType defines message type.