bool Initialize ( const [FVersionedNiagaraEmitter](API\Plugins\Niagara\FVersionedNiagaraEmitter) & InEmitter, [TWeakPtr](API\Runtime\Core\Templates\TWeakPtr)< [FNiagaraEmitterInstance](API\Plugins\Niagara\FNiagaraEmitterInstance), ESPMode::ThreadSafe > InSimulation )