[FMassFragmentRequirements](API\Plugins\MassEntity\FMassFragmentRequirements) & AddRequirement ( const [UScriptStruct](API\Runtime\CoreUObject\UObject\UScriptStruct) * FragmentType, const [EMassFragmentAccess](API\Plugins\MassEntity\EMassFragmentAccess) AccessMode, const [EMassFragmentPresence](API\Plugins\MassEntity\EMassFragmentPresence) Presence )