}

  @Override
  @CheckForNull
  public V edgeValueOrDefault(EndpointPair<N> endpoints, @CheckForNull V defaultValue) {
    validateEndpoints(endpoints);
    return edgeValueOrDefaultInternal(endpoints.nodeU(), endpoints.nodeV(), defaultValue);
  }

  @Override
  protected long edgeCount() {
    return edgeCount;
  }

  }

  @Override
  @CheckForNull
  public V edgeValueOrDefault(EndpointPair<N> endpoints, @CheckForNull V defaultValue) {
    validateEndpoints(endpoints);
    return edgeValueOrDefaultInternal(endpoints.nodeU(), endpoints.nodeV(), defaultValue);
  }

  @Override
  protected long edgeCount() {
    return edgeCount;
  }

  }

  /**
   * Throws {@code IllegalArgumentException} if the ordering of {@code endpoints} is not compatible
   * with the directionality of this graph.
   */
  protected final void validateEndpoints(EndpointPair<?> endpoints) {
    checkNotNull(endpoints);
    checkArgument(isOrderingCompatible(endpoints), ENDPOINTS_MISMATCH);
  }

  /**

  }

  /**
   * Throws {@code IllegalArgumentException} if the ordering of {@code endpoints} is not compatible
   * with the directionality of this graph.
   */
  protected final void validateEndpoints(EndpointPair<?> endpoints) {
    checkNotNull(endpoints);
    checkArgument(isOrderingCompatible(endpoints), ENDPOINTS_MISMATCH);
  }

  /**

		idxPath := fldPath.Index(i)
		allErrs = append(allErrs, validateFinalizerName(string(newNamespace.Spec.Finalizers[i]), idxPath)...)
	}
	return allErrs
}

// ValidateEndpoints validates Endpoints on create and update.
func ValidateEndpoints(endpoints *core.Endpoints) field.ErrorList {
	allErrs := ValidateObjectMeta(&endpoints.ObjectMeta, true, ValidateEndpointsName, field.NewPath("metadata"))

	endpoint := newNodeNameEndpoint("illegal*.nodename")
	errList := ValidateEndpoints(endpoint)
	if len(errList) == 0 {
		t.Error("Endpoint should reject invalid NodeName")
	}
}

func TestEndpointAddressNodeNameCanBeAnIPAddress(t *testing.T) {
	endpoint := newNodeNameEndpoint("10.10.1.1")
	errList := ValidateEndpoints(endpoint)
	if len(errList) != 0 {