- [Changed](#changed-15)
    - [Removed](#removed-15)
- [v1.21.0-beta.1](#v1210-beta1)
  - [Downloads for v1.21.0-beta.1](#downloads-for-v1210-beta1)
    - [Source Code](#source-code-16)
    - [Client binaries](#client-binaries-16)
    - [Server binaries](#server-binaries-16)
    - [Node binaries](#node-binaries-16)
  - [Changelog since v1.21.0-beta.0](#changelog-since-v1210-beta0)
  - [Urgent Upgrade Notes](#urgent-upgrade-notes-2)

    <artifactId>maven-api</artifactId>
    <version>4.0.0-beta-6-SNAPSHOT</version>
  </parent>

  <artifactId>maven-api-model</artifactId>

  <name>Maven 4 API :: Model</name>
  <description>Maven 4 API - Immutable Model for Maven POM (Project Object Model).</description>

  <dependencies>
    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-api-meta</artifactId>
    </dependency>
    <dependency>

    - [Server Binaries](#server-binaries-12)
    - [Node Binaries](#node-binaries-12)
  - [Changelog since v1.12.0-beta.2](#changelog-since-v1120-beta2)
    - [Action Required](#action-required-2)
    - [Other notable changes](#other-notable-changes-13)
- [v1.12.0-beta.2](#v1120-beta2)
  - [Downloads for v1.12.0-beta.2](#downloads-for-v1120-beta2)
    - [Client Binaries](#client-binaries-13)
    - [Server Binaries](#server-binaries-13)

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.graph;

import com.google.common.annotations.Beta;
import com.google.errorprone.annotations.DoNotMock;

/**
 * A functional interface for <a
 * href="https://en.wikipedia.org/wiki/Graph_(discrete_mathematics)">graph</a>-structured data.
 *

package com.google.common.graph;

import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.graph.GraphConstants.NOT_AVAILABLE_ON_UNDIRECTED;

import com.google.common.annotations.Beta;
import com.google.common.base.Objects;
import com.google.common.collect.Iterators;
import com.google.common.collect.UnmodifiableIterator;
import com.google.errorprone.annotations.Immutable;

 * limitations under the License.
 */

package com.google.common.graph;

import static java.util.Objects.requireNonNull;

import com.google.common.annotations.Beta;
import com.google.common.collect.Maps;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import javax.annotation.CheckForNull;

/**

tolerate zone failure.
     * Simplified way to run a container on every node (DaemonSet API (Beta) in the
Extensions API group): Kubernetes can schedule a service (such as a logging
agent) that runs one, and only one, pod per node.
     * TLS and L7 support (Ingress API (Beta) in the Extensions API group): Kubernetes
is now easier to integrate into custom networking environments by supporting

      - [Deprecated/changed metrics](#deprecated/changed-metrics)
    - [Notable Features](#notable-features)
      - [Stable](#stable)
      - [Beta](#beta)
      - [Alpha](#alpha)
- [v1.15.0-beta.1](#v1150-beta1)
  - [Downloads for v1.15.0-beta.1](#downloads-for-v1150-beta1)
    - [Client Binaries](#client-binaries-13)
    - [Server Binaries](#server-binaries-13)
    - [Node Binaries](#node-binaries-13)

  - [Changelog since v1.16.0-beta.2](#changelog-since-v1160-beta2)
    - [Other notable changes](#other-notable-changes-7)
- [v1.16.0-beta.2](#v1160-beta2)
  - [Downloads for v1.16.0-beta.2](#downloads-for-v1160-beta2)
    - [Client Binaries](#client-binaries-19)
    - [Server Binaries](#server-binaries-19)
    - [Node Binaries](#node-binaries-19)
  - [Changelog since v1.16.0-beta.1](#changelog-since-v1160-beta1)

### Avoiding permanent beta

From Kubernetes 1.20 onwards, SIG Architecture will implement a new policy to transition all REST APIs out of beta within nine months. The idea behind the new policy is to avoid features staying in beta for a long time. Once a new API enters beta, it will have nine months to either:

 - reach GA, and deprecate the beta, or
 - have a new beta version _(and deprecate the previous beta)_.