virtual [TArray](API\Runtime\Core\Containers\TArray)< [FActiveGameplayEffectHandle](API\Plugins\GameplayAbilities\FActiveGameplayEffectHandle) > ApplyGameplayEffectSpec ( [FGameplayEffectSpec](API\Plugins\GameplayAbilities\FGameplayEffectSpec) & Spec, [FPredictionKey](API\Plugins\GameplayAbilities\FPredictionKey) PredictionKey )