Disconnects from the server (all Database operations will be completed offline).
The client automatically maintains a persistent connection to the Database server, which will remain active indefinitely and reconnect when disconnected. However, the
goOnline()methods may be used to control the client connection in cases where a persistent connection is undesirable.
While offline, the client will no longer receive data updates from the Database. However, all Database operations performed locally will continue to immediately fire events, allowing your application