*       you can set {@code
 *       -XepOpt:NullAway:CustomNullableAnnotations=com.google.common.base.ParametricNullness,...,com.google.common.util.concurrent.ParametricNullness},
 *       where the {@code ...} contains the names of all the other {@code ParametricNullness}
 *       annotations in Guava. Or you might prefer to omit Guava from your {@code AnnotatedPackages}
 *       list.
 *   <li><a href="https://developers.google.com/j2objc">J2ObjC</a>

 *       you can set {@code
 *       -XepOpt:NullAway:CustomNullableAnnotations=com.google.common.base.ParametricNullness,...,com.google.common.util.concurrent.ParametricNullness},
 *       where the {@code ...} contains the names of all the other {@code ParametricNullness}
 *       annotations in Guava. Or you might prefer to omit Guava from your {@code AnnotatedPackages}
 *       list.
 *   <li><a href="https://developers.google.com/j2objc">J2ObjC</a>

 *
 * <p>Time complexities for mutation methods are all O(1) except for {@code removeNode(N node)},
 * which is in O(d_node) where d_node is the degree of {@code node}.
 *
 * @author James Sexton
 * @author Joshua O'Madadhain
 * @author Omar Darwish
 * @param <N> Node parameter type
 * @param <V> Value parameter type
 */
@ElementTypesAreNonnullByDefault

 *         .<String, Integer>immutable()
 *         .addEdge("LAX", "ATL", 3025)
 *         .addEdge("LAX", "ATL", 1598)
 *         .addEdge("ATL", "LAX", 2450)
 *         .build();
 * }</pre>
 *
 * @author James Sexton
 * @author Joshua O'Madadhain
 * @param <N> The most general node type this builder will support. This is normally {@code Object}
 *     unless it is constrained by using a method like {@link #nodeOrder}, or the builder is

  private static final ImmutableList<String> NULL_TEST_METHOD_NAMES =
      ImmutableList.of(
          "testNulls", "testNull",
          "testNullPointers", "testNullPointer",
          "testNullPointerExceptions", "testNullPointerException");

  /* The names of the expected method that tests serializable. */
  private static final ImmutableList<String> SERIALIZABLE_TEST_METHOD_NAMES =

  }

  /**
   * Returns the file name without its <a
   * href="http://en.wikipedia.org/wiki/Filename_extension">file extension</a> or path. This is
   * similar to the {@code basename} unix command. The result does not include the '{@code .}'.
   *
   * @param file The name of the file to trim the extension from. This can be either a fully
   *     qualified file name (including a path) or just a file name.

  private static final class TestFuture {

    final ListenableFuture<String> future;
    final String name;
    final Runnable finisher;

    TestFuture(ListenableFuture<String> future, String name, Runnable finisher) {
      this.future = future;
      this.name = name;
      this.finisher = finisher;
    }
  }

  /**

  private static final class TestFuture {

    final ListenableFuture<String> future;
    final String name;
    final Runnable finisher;

    TestFuture(ListenableFuture<String> future, String name, Runnable finisher) {
      this.future = future;
      this.name = name;
      this.finisher = finisher;
    }
  }

  /**

                  protected Set<String> create(String[] elements) {
                    return Sets.union(Sets.<String>newHashSet(), Sets.<String>newHashSet());
                  }
                })
            .named("empty U empty")
            .withFeatures(
                CollectionSize.ZERO, CollectionFeature.NONE, CollectionFeature.ALLOWS_NULL_VALUES)
            .createTestSuite());

    suite.addTest(

            new TestStringSetGenerator() {
              @Override
              public Set<String> create(String[] elements) {
                return Collections.emptySet();
              }
            })
        .named("emptySet")
        .withFeatures(CollectionFeature.SERIALIZABLE, CollectionSize.ZERO)
        .suppressing(suppressForEmptySet())
        .createTestSuite();
  }

  public Test testsForSingletonSet() {