[TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [FAbilityReplicatedDataCache](API\Plugins\GameplayAbilities\Abilities\FAbilityReplicatedDataCache) > FindOrAdd ( const [FGameplayAbilitySpecHandleAndPredictionKey](API\Plugins\GameplayAbilities\Abilities\FGameplayAbility-) & Key )