// APIGroup is the group for the resource being referenced. It is
  // empty for the core API. This matches the group in the APIVersion
  // that is used when creating the resources.
  // +optional
  optional string apiGroup = 1;

  // Resource is the type of resource being referenced, for example "pods".
  optional string resource = 3;

  // Name is the name of resource being referenced.
  optional string name = 4;

  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1;

  // Spec holds information about the request being evaluated.  spec.namespace must be equal to the namespace
  // you made the request against.  If empty, it is defaulted.
  optional SubjectAccessReviewSpec spec = 2;

   * Returns a predicate that evaluates to {@code true} if the object reference being tested is
   * null.
   */
  @GwtCompatible(serializable = true)
  public static <T extends @Nullable Object> Predicate<T> isNull() {
    return ObjectPredicate.IS_NULL.withNarrowedType();
  }

  /**
   * Returns a predicate that evaluates to {@code true} if the object reference being tested is not
   * null.
   */
  @GwtCompatible(serializable = true)

  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1;

  // Spec holds information about the request being evaluated.  spec.namespace must be equal to the namespace
  // you made the request against.  If empty, it is defaulted.
  optional SubjectAccessReviewSpec spec = 2;

    public boolean isSupported ( ASN1ObjectIdentifier mechanism ) {
        // prevent nesting
        return false;
    }


    /**
     * Determines what mechanism is being used for this context.
     * 
     * @return the Oid of the mechanism being used
     */
    ASN1ObjectIdentifier[] getMechs () {
        return this.mechs;
    }


    /**
     * @return the mechanisms announced by the remote end

   * Returns a predicate that evaluates to {@code true} if the object reference being tested is
   * null.
   */
  @GwtCompatible(serializable = true)
  public static <T extends @Nullable Object> Predicate<T> isNull() {
    return ObjectPredicate.IS_NULL.withNarrowedType();
  }

  /**
   * Returns a predicate that evaluates to {@code true} if the object reference being tested is not
   * null.
   */
  @GwtCompatible(serializable = true)

	inputHeader.Set("X-Amz-Meta-Name", expectedMetaName)
	// calling the function being tested.
	errCode := checkMetaHeaders(signedHeadersMap, r)
	if errCode != ErrNone {
		t.Fatalf("Expected the APIErrorCode to be %d, but got %d", ErrNone, errCode)
	}

	// Add new metadata in inputHeader
	inputHeader.Set("X-Amz-Meta-Clone", "fail")
	// calling the function being tested.
	errCode = checkMetaHeaders(signedHeadersMap, r)

 *   <li><b>Warning:</b> a view collection such as {@link ImmutableMap#keySet} or {@link
 *       ImmutableList#subList} may retain a reference to the entire data set, preventing it from
 *       being garbage collected. If some of the data is no longer reachable through other means,
 *       this constitutes a memory leak. Pass the view collection to the appropriate {@code copyOf}
 *       method to obtain a correctly-sized copy.

 *   <li><b>Warning:</b> a view collection such as {@link ImmutableMap#keySet} or {@link
 *       ImmutableList#subList} may retain a reference to the entire data set, preventing it from
 *       being garbage collected. If some of the data is no longer reachable through other means,
 *       this constitutes a memory leak. Pass the view collection to the appropriate {@code copyOf}
 *       method to obtain a correctly-sized copy.

  // apiGroup is the group for the resource being referenced. If APIGroup is
  // not specified, the specified Kind must be in the core API group. For any
  // other third-party types, APIGroup is required.
  // +optional
  optional string aPIGroup = 1;

  // kind is the type of resource being referenced.
  optional string kind = 2;

  // name is the name of resource being referenced.
  optional string name = 3;