/**
   * Get the full set of requirements for a tester class.
   *
   * @param testerClass a tester class
   * @return all the constraints implicitly or explicitly required by the class or any of its
   *     superclasses.
   * @throws ConflictingRequirementsException if the requirements are mutually inconsistent.
   */
  public static TesterRequirements getTesterRequirements(Class<?> testerClass)

  /**
   * Get the full set of requirements for a tester class.
   *
   * @param testerClass a tester class
   * @return all the constraints implicitly or explicitly required by the class or any of its
   *     superclasses.
   * @throws ConflictingRequirementsException if the requirements are mutually inconsistent.
   */
  public static TesterRequirements getTesterRequirements(Class<?> testerClass)

   * "inherited" from superclasses of the same package.
   */
  public void testAllPublicStaticMethods(Class<?> c) {
    testStaticMethods(c, Visibility.PUBLIC);
  }

  /**
   * Runs {@link #testMethod} on every instance method of the class of {@code instance} with at
   * least {@code minimalVisibility}, including those inherited from superclasses of the same
   * package.
   */

   * "inherited" from superclasses of the same package.
   */
  public void testAllPublicStaticMethods(Class<?> c) {
    testStaticMethods(c, Visibility.PUBLIC);
  }

  /**
   * Runs {@link #testMethod} on every instance method of the class of {@code instance} with at
   * least {@code minimalVisibility}, including those inherited from superclasses of the same
   * package.
   */

  /**
   * Flattens a class's type hierarchy into a set of {@code Class} objects including all
   * superclasses (transitively) and all interfaces implemented by these superclasses.
   */
  @VisibleForTesting
  static ImmutableSet<Class<?>> flattenHierarchy(Class<?> concreteClass) {
    return flattenHierarchyCache.getUnchecked(concreteClass);
  }

    assertEquals("Correct string should be delivered.", EVENT, events.get(0));
  }

  /**
   * Tests that events are distributed to any subscribers to their type or any supertype, including
   * interfaces and superclasses.
   *
   * <p>Also checks delivery ordering in such cases.
   */
  public void testPolymorphicDistribution() {
    // Three catchers for related types String, Object, and Comparable<?>.
    // String isa Object

    }

    /**
     * Retrieves public methods for a class. In case the class is not
     * public, retrieves methods with same signature as its public methods
     * from public superclasses and interfaces (if they exist). Basically
     * upcasts every method to the nearest acccessible method.
     */
    private static Method[] getAccessibleMethods(Class<?> clazz) {

  }

  /**
   * Returns an object responsible for performing sanity tests against the return values of all
   * public static methods declared by {@code cls}, excluding superclasses.
   */
  public FactoryMethodReturnValueTester forAllPublicStaticMethods(Class<?> cls) {
    ImmutableList.Builder<Invokable<?, ?>> builder = ImmutableList.builder();
    for (Method method : cls.getDeclaredMethods()) {