handle abstract method
Defines the synchronous logic for processing the effect.
effect: The effect to be handled.emit: A function to emit messages as a result of handling the effect.
Subclasses must override this method to implement their specific synchronous effect handling logic.
Note: The return type is explicitly set to Null to ensure that this method is not mistakenly implemented with asynchronous behavior.
Implementation
Null handle(Effect effect, MsgEmitter<Msg> emit);