Retrieves the currently configured connection to the lattice. DO NOT call this method until
after the provider is running (meaning run_provider has been called)
or this method will panic. Only in extremely rare cases should this be called manually and it
will only be used by generated code
Loads configuration data sent from the host over stdin. The returned host data contains all the
configuration information needed to connect to the lattice and any additional configuration
provided to this provider (like config_json).