Libraries used to build other parts of the project. These are meant to be
internal rather than general purpose. We have no plans to
[semver](https://semver.org/) their APIs or accept feature requests for them.
We publish them to maven central because they are dependencies of our plugin
test framework, high level rest client, and jdbc driver but they really aren't
general purpose enough to *belong* in maven central. We're still working out
what to do here.

 * {@code Iterable}. Except as noted, each method has a corresponding {@link Iterator}-based method
 * in the {@link Iterators} class.
 *
 * <p><b>Java 8+ users:</b> several common uses for this class are now more comprehensively
 * addressed by the new {@link java.util.stream.Stream} library. Read the method documentation below

 * {@code Iterable}. Except as noted, each method has a corresponding {@link Iterator}-based method
 * in the {@link Iterators} class.
 *
 * <p><b>Java 8+ users:</b> several common uses for this class are now more comprehensively
 * addressed by the new {@link java.util.stream.Stream} library. Read the method documentation below

    sizesToTest.retainAll(features);
    features.removeAll(sizesToTest);

    addImpliedFeatures(sizesToTest);
    sizesToTest.retainAll(asList(CollectionSize.ZERO, CollectionSize.ONE, CollectionSize.SEVERAL));

    logger.fine("   Sizes: " + formatFeatureSet(sizesToTest));

    if (sizesToTest.isEmpty()) {
      throw new IllegalStateException(
          name

    for (ListTestSuiteBuilder<Double> builder : builders) {
      suite.addTest(
          builder
              .withFeatures(
                  CollectionSize.ONE,
                  CollectionSize.SEVERAL,
                  CollectionFeature.RESTRICTS_ELEMENTS,
                  ListFeature.SUPPORTS_SET)
              .createTestSuite());
    }
    return suite;
  }

    for (ListTestSuiteBuilder<Long> builder : builders) {
      suite.addTest(
          builder
              .withFeatures(
                  CollectionSize.ONE,
                  CollectionSize.SEVERAL,
                  CollectionFeature.RESTRICTS_ELEMENTS,
                  ListFeature.SUPPORTS_SET)
              .createTestSuite());
    }
    return suite;
  }

    for (ListTestSuiteBuilder<Short> builder : builders) {
      suite.addTest(
          builder
              .withFeatures(
                  CollectionSize.ONE,
                  CollectionSize.SEVERAL,
                  CollectionFeature.RESTRICTS_ELEMENTS,
                  ListFeature.SUPPORTS_SET)
              .createTestSuite());
    }
    return suite;
  }

    for (ListTestSuiteBuilder<Character> builder : builders) {
      suite.addTest(
          builder
              .withFeatures(
                  CollectionSize.ONE,
                  CollectionSize.SEVERAL,
                  CollectionFeature.RESTRICTS_ELEMENTS,
                  ListFeature.SUPPORTS_SET)
              .createTestSuite());
    }
    return suite;
  }

    for (ListTestSuiteBuilder<Short> builder : builders) {
      suite.addTest(
          builder
              .withFeatures(
                  CollectionSize.ONE,
                  CollectionSize.SEVERAL,
                  CollectionFeature.RESTRICTS_ELEMENTS,
                  ListFeature.SUPPORTS_SET)
              .createTestSuite());
    }
    return suite;
  }

wonder how many miles I've fallen by this time?' she said aloud.
`I must be getting somewhere near the centre of the earth.  Let
me see:  that would be four thousand miles down, I think--' (for,
you see, Alice had learnt several things of this sort in her
lessons in the schoolroom, and though this was not a VERY good
opportunity for showing off her knowledge, as there was no one to
listen to her, still it was good practice to say it over) `--yes,