public Optional<Output<SecretReferencePatchArgs>> secretRef() {
        return Optional.ofNullable(this.secretRef);
    }
@return secretRef references to the secret for ScaleIO user and other sensitive information. If this is not provided, Login operation will fail.
sdk/java/src/main/java/com/pulumi/kubernetes/core/v1/inputs/ScaleIOPersistentVolumeSourcePatchArgs.java