Core singleton representing an instance of the Rust Core SDK
Use install in order to customize the server connection options or other global process options.
Default options get overridden when Core is installed and are remembered in case Core is re-instantiated after being shut down
Flush any buffered logs.
This is a noop in case the instance is configured with
Instantiate a new Core object and set it as the singleton instance
If Core has already been instantiated with instance or this method, will throw a IllegalStateError.
Get or instantiate the singleton Core object
If Core has not been instantiated with install or this method, a new Core instance will be installed and configured to connect to a local server.