bool CanLink ( [URigVMPin](API\Plugins\RigVMDeveloper\RigVMModel\URigVMPin) * InSourcePin, [URigVMPin](API\Plugins\RigVMDeveloper\RigVMModel\URigVMPin) * InTargetPin, [FString](API\Runtime\Core\Containers\FString) * OutFailureReason )