bool BeginAppend ( [FNiagaraSimCacheCreateParameters](API\Plugins\Niagara\FNiagaraSimCacheCreateParameters) InCreateParameters, [UNiagaraComponent](API\Plugins\Niagara\UNiagaraComponent) * NiagaraComponent, [FNiagaraSimCacheFeedbackContext](API\Plugins\Niagara\FNiagaraSimCacheFeedbackContext) & FeedbackContext )