* Map.getOrDefault}</a>.
   *
   * @since 23.5 (but since 21.0 in the JRE <a
   *     href="https://github.com/google/guava#guava-google-core-libraries-for-java">flavor</a>).
   *     Note, however, that Java 8+ users can call this method with any version and flavor of
   *     Guava.
   */
  // @Override under Java 8 / API Level 24
  @CheckForNull

  @Override
  @CheckForNull
  public abstract V get(@CheckForNull Object key);

  /**
   * @since 21.0 (but only since 23.5 in the Android <a
   *     href="https://github.com/google/guava#guava-google-core-libraries-for-java">flavor</a>).
   *     Note, however, that Java 8+ users can call this method with any version and flavor of
   *     Guava.
   */
  @Override
  @CheckForNull