pub fn get_op() -> Option<EngineOperation>
Expand description
Determines the engine operation to be performed by examining environment variables (set automatically by the CLI as appropriate).
Note: in production, it would be inconvenient to provide an environment
variable just to get the server to work, so release builds run the server
by default if the relevant environment variable is unset. If the same
situation occurs in development however, None
will be returned.