[TRigVMTypeIndex](API\Plugins\RigVM\RigVMCore\TRigVMTypeIndex) TryReduceTypesToSingle ( const [TArray](API\Runtime\Core\Containers\TArray)< [TRigVMTypeIndex](API\Plugins\RigVM\RigVMCore\TRigVMTypeIndex) > & InTypes, const [TRigVMTypeIndex](API\Plugins\RigVM\RigVMCore\TRigVMTypeIndex) PreferredType ) const