*/
  protected final class MultiExceptionListIterator implements ListIterator<E> {
    // TODO: track seen elements when order isn't guaranteed
    // TODO: verify contents afterward
    // TODO: something shiny and new instead of Stack
    // TODO: test whether null is supported (create a Feature)
    /**
     * The elements to be returned by future calls to {@code next()}, with the first at the top of
     * the stack.

        try {
          executor.execute(this);
        } catch (Exception e) { // sneaky checked exception
          // reset state in case of an error so that later dispatch calls will actually do something
          synchronized (this) {
            isThreadScheduled = false;
          }
          // Log it and keep going.
          logger
              .get()
              .log(

   */
  protected final class MultiExceptionListIterator implements ListIterator<E> {
    // TODO: track seen elements when order isn't guaranteed
    // TODO: verify contents afterward
    // TODO: something shiny and new instead of Stack
    // TODO: test whether null is supported (create a Feature)
    /**
     * The elements to be returned by future calls to {@code next()}, with the first at the top of
     * the stack.

     * <pre>java -jar ${maven.repo.local}/org/apache/maven/maven-artifact/${maven.version}/maven-artifact-${maven.version}.jar "1.2.7" "1.2-SNAPSHOT"</pre>
     * command to command line. Result of given command will be something like this:
     * <pre>
     * Display parameters as parsed by Maven (in canonical form) and comparison result:
     * 1. 1.2.7 == 1.2.7
     *    1.2.7 &gt; 1.2-SNAPSHOT
     * 2. 1.2-SNAPSHOT == 1.2-snapshot

      }
    },
    ;

    abstract <T extends @Nullable Object> Scenario<?> mutate(Scenario<T> scenario);
  }

  /**
   * A dummy object we create so that we can have something meaningful to have a compound ordering
   * over.
   */
  private static class Composite<T extends @Nullable Object> implements Comparable<Composite<T>> {
    final T value;
    final int rank;

   *       {@link Futures#addCallback} throws an exception, that exception will be typically be
   *       logged by the {@link ListenableFuture} implementation, even if the thread is configured
   *       to do something different. In other cases, no code will catch the exception, and it may
   *       terminate whichever thread happens to trigger the execution.
   * </ul>
   *

      }
    },
    ;

    abstract <T extends @Nullable Object> Scenario<?> mutate(Scenario<T> scenario);
  }

  /**
   * A dummy object we create so that we can have something meaningful to have a compound ordering
   * over.
   */
  private static class Composite<T extends @Nullable Object> implements Comparable<Composite<T>> {
    final T value;
    final int rank;

    }

    /**
     * Build an ArtifactRepository object.
     *
     * @param id
     * @return
     */
    private ArtifactRepository getRepo(String id) {
        return getRepo(id, "http://something");
    }

    private Mirror newMirror(String id, String mirrorOf, String url) {
        return newMirror(id, mirrorOf, null, url);
    }

      <B extends A> void verifyTwoStageResolution() {
        @SuppressWarnings({"unchecked", "rawtypes"})
        Type type =
            new TypeToken<B>(getClass()) {}
            // B's bound may have already resolved to something.
            // Make sure it can still further resolve when given a context.
            .where(new TypeParameter<B>() {}, (Class) Integer.class).getType();
        assertEquals(Integer.class, type);
      }
    }

    }

    @Override
    public OneSizeTestContainerGenerator<Map<K, V>, Entry<K, V>> getInnerGenerator() {
      return mapGenerator;
    }
  }

  // TODO(cpovirk): could something like this be used elsewhere, e.g., ReserializedListGenerator?
  static class ForwardingTestMapGenerator<K extends @Nullable Object, V extends @Nullable Object>
      implements TestMapGenerator<K, V> {