return null;
      }
      // Successfully crossed over from min to max.
      // Bubble up max levels.
      E parent;
      // If toTrickle is moved up to a parent of removeIndex, the parent is
      // placed in removeIndex position. We must return that to the iterator so
      // that it knows to skip it.
      if (crossOver < removeIndex) {
        // We crossed over to the parent level in crossOver, so the parent

 * graph. The following test cases are left for the subclasses to handle:
 *
 * <ul>
 *   <li>Test cases related to whether the graph is directed or undirected.
 *   <li>Test cases related to the specific implementation of the {@link Graph} interface.
 * </ul>
 *
 * TODO(user): Make this class generic (using <N, E>) for all node and edge types.

   * it is returned directly. Otherwise, a new array of size {@code minLength + padding} is
   * returned, containing the values of {@code array}, and zeroes in the remaining places.
   *
   * @param array the source array
   * @param minLength the minimum length the returned array must guarantee
   * @param padding an extra amount to "grow" the array by if growth is necessary

  }

  /**
   * Not really a signature -- just the parts that affect whether one method is a fauxveride of a
   * method from an ancestor class.
   *
   * <p>See JLS 8.4.2 for the definition of the related "override-equivalent."
   */
  private static final class MethodSignature implements Comparable<MethodSignature> {
    final String name;
    final List<Class<?>> parameterTypes;
    final TypeSignature typeSignature;

  }

  /**
   * Not really a signature -- just the parts that affect whether one method is a fauxveride of a
   * method from an ancestor class.
   *
   * <p>See JLS 8.4.2 for the definition of the related "override-equivalent."
   */
  private static final class MethodSignature implements Comparable<MethodSignature> {
    final String name;
    final List<Class<?>> parameterTypes;
    final TypeSignature typeSignature;

  }

  public void testHash() throws IOException {
    ByteSource byteSource = new TestByteSource("hamburger\n".getBytes(Charsets.US_ASCII));

    // Pasted this expected string from `echo hamburger | md5sum`
    assertEquals("cfa0c5002275c90508338a5cdb2a9781", byteSource.hash(Hashing.md5()).toString());
  }

  public void testContentEquals() throws IOException {

   * {@link Predicate#apply}. Do not provide a predicate such as {@code
   * Predicates.instanceOf(ArrayList.class)}, which is inconsistent with equals. (See {@link
   * Iterables#filter(Iterable, Class)} for related functionality.)
   *
   * <p><b>{@code Stream} equivalent:</b> {@link java.util.stream.Stream#filter Stream.filter}.
   */
  // TODO(kevinb): how can we omit that Iterables link when building gwt
  // javadoc?

 * a specific value. These modification operations are optional, but implementations which support
 * the standard collection operations {@link #add(Object)} or {@link #remove(Object)} are encouraged
 * to implement the related methods as well. Finally, two collection views are provided: {@link
 * #elementSet} contains the distinct elements of the multiset "with duplicates collapsed", and

import junit.framework.TestCase;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Unit tests for {@link Invokable}.
 *
 * @author Ben Yu
 */
@AndroidIncompatible // lots of failures, possibly some related to bad equals() implementations?
public class InvokableTest extends TestCase {
  // Historically Invokable inherited from java.lang.reflect.AccessibleObject. That's no longer the

   * {@link Predicate#apply}. Do not provide a predicate such as {@code
   * Predicates.instanceOf(ArrayList.class)}, which is inconsistent with equals. (See {@link
   * Iterables#filter(Iterable, Class)} for related functionality.)
   *
   * <p><b>Java 8+ users:</b> many use cases for this method are better addressed by {@link
   * java.util.stream.Stream#filter}. This method is not being deprecated, but we gently encourage