* test, or to keep dependent builds clean in spite of an erroneous test.
   */
  @CanIgnoreReturnValue
  public B suppressing(Method... methods) {
    return suppressing(asList(methods));
  }

  @CanIgnoreReturnValue
  public B suppressing(Collection<Method> methods) {
    suppressedTests.addAll(methods);
    return self();
  }

  public Set<Method> getSuppressedTests() {

  }

  /**
   * Returns the {@link Method} instance for {@link #testAddAll_nullUnsupported()} so that tests can
   * suppress it with {@code FeatureSpecificTestSuiteBuilder.suppressing()} until <a
   * href="https://bugs.openjdk.org/browse/JDK-5045147">JDK-5045147</a> is fixed.
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method getAddAllNullUnsupportedMethod() {

              .named(getName() + ".entrySet")
              .withFeatures(computeEntrySetFeatures(parentBuilder.getFeatures()))
              .suppressing(parentBuilder.getSuppressedTests())
              .withSetUp(parentBuilder.getSetUp())
              .withTearDown(parentBuilder.getTearDown())
              .createTestSuite());
    }

        "http://www.puppycrawl.com/dtds/configuration_1_2.dtd">
<module name="Checker">
    <module name="SuppressionFilter">
        <property name="file" value="${config_loc}/suppressions.xml"/>
    </module>
    <!-- allows suppressing using the @SuppressWarnings("checkstyle:...") -->
    <module name="SuppressWarningsFilter"/>
    <module name="TreeWalker">
        <!-- Blocks -->
        <module name="EmptyBlock">

            new MultimapGetGenerator<K, V>(parentBuilder.getSubjectGenerator()))
        .withFeatures(computeMultimapGetFeatures(parentBuilder.getFeatures()))
        .named(parentBuilder.getName() + ".get[key]")
        .suppressing(parentBuilder.getSuppressedTests())
        .createTestSuite();
  }

  @Override
  TestSuite computeMultimapAsMapGetTestSuite(
      FeatureSpecificTestSuiteBuilder<

            .withFeatures(FOR_MAP_FEATURES_ANY)
            .suppressing(getCountDuplicateInitializingMethods())
            .suppressing(getSetCountDuplicateInitializingMethods())
            .suppressing(getIteratorDuplicateInitializingMethods())
            .suppressing(getRemoveDuplicateInitializingMethods())
            .suppressing(getElementSetDuplicateInitializingMethods())
            .createTestSuite());

            .suppressing(getCountDuplicateInitializingMethods())
            .suppressing(getSetCountDuplicateInitializingMethods())
            .suppressing(getIteratorDuplicateInitializingMethods())
            .suppressing(getRemoveDuplicateInitializingMethods())
            .suppressing(getForEachEntryDuplicateInitializingMethods())
            .suppressing(getElementSetDuplicateInitializingMethods())

              .named(getName() + ".entrySet")
              .withFeatures(computeEntrySetFeatures(parentBuilder.getFeatures()))
              .suppressing(parentBuilder.getSuppressedTests())
              .withSetUp(parentBuilder.getSetUp())
              .withTearDown(parentBuilder.getTearDown())
              .createTestSuite());
    }

                return navigableSet.descendingSet();
              }
            })
        .named(parentBuilder.getName() + " descending")
        .withFeatures(features)
        .suppressing(parentBuilder.getSuppressedTests())
        .createTestSuite();
  }

  @SuppressWarnings("rawtypes") // class literals
  @Override
  protected List<Class<? extends AbstractTester>> getTesters() {

                  CollectionSize.ANY,
                  KNOWN_ORDER,
                  ALLOWS_NULL_QUERIES,
                  NON_STANDARD_TOSTRING,
                  RESTRICTS_ELEMENTS)
              .suppressing(getHoleMethods())
              .createTestSuite());

      suite.addTest(
          NavigableSetTestSuiteBuilder.using(new ContiguousSetHeadsetGenerator())
              .named("Range.asSet, headset")