Invokable<?, ?> factory = Invokable.from(constructor);
    assertThat(factory.getTypeParameters()).hasLength(2);
    assertEquals(type.getTypeParameters()[0], factory.getTypeParameters()[0]);
    assertEquals(constructor.getTypeParameters()[0], factory.getTypeParameters()[1]);
    ParameterizedType returnType = (ParameterizedType) factory.getReturnType().getType();

    Invokable<?, ?> factory = Invokable.from(constructor);
    assertThat(factory.getTypeParameters()).hasLength(2);
    assertEquals(type.getTypeParameters()[0], factory.getTypeParameters()[0]);
    assertEquals(constructor.getTypeParameters()[0], factory.getTypeParameters()[1]);
    ParameterizedType returnType = (ParameterizedType) factory.getReturnType().getType();

     */
    public static String signature(Constructor<?> constructor, boolean addNameParameter) {
        StringBuilder builder = new StringBuilder();
        visitFormalTypeParameters(constructor.getTypeParameters(), builder);
        visitConstructorParameters(constructor.getGenericParameterTypes(), addNameParameter, builder);
        builder.append('V');
        visitExceptions(constructor.getGenericExceptionTypes(), builder);

    TypeToken<?> f = TypeToken.of(new TypeCapture<F>() {}.capture());
    assertEquals(String.class, f.resolveType(Function.class.getTypeParameters()[0]).getType());
    assertEquals(Integer.class, f.resolveType(Function.class.getTypeParameters()[1]).getType());
    assertEquals(Long.class, f.resolveType(Iterable.class.getTypeParameters()[0]).getType());
  }

  public <E extends Comparable<Iterable<String>> & Iterable<Integer>>

        Type[] typeArguments = getActualTypeArguments(type);
        if (typeArguments.length == 0) {
            return Collections.emptyMap();
        }
        TypeVariable<?>[] typeVariables = getRawType(type).getTypeParameters();
        Map<TypeVariable<?>, Type> map = new HashMap<>();
        for (int i = 0; i < typeVariables.length; i++) {
            map.put(typeVariables[i], typeArguments[i]);
        }
        return map;
    }

    TypeToken<?> f = TypeToken.of(new TypeCapture<F>() {}.capture());
    assertEquals(String.class, f.resolveType(Function.class.getTypeParameters()[0]).getType());
    assertEquals(Integer.class, f.resolveType(Function.class.getTypeParameters()[1]).getType());
    assertEquals(Long.class, f.resolveType(Iterable.class.getTypeParameters()[0]).getType());
  }

  public <E extends Comparable<Iterable<String>> & Iterable<Integer>>

    private final Class<?> rawType;

    ParameterizedTypeImpl(@CheckForNull Type ownerType, Class<?> rawType, Type[] typeArguments) {
      checkNotNull(rawType);
      checkArgument(typeArguments.length == rawType.getTypeParameters().length);
      disallowPrimitiveType(typeArguments, "type parameter");
      this.ownerType = ownerType;
      this.rawType = rawType;
      this.argumentsList = JavaVersion.CURRENT.usedInGenericType(typeArguments);

      return defaultType;
    }
    if (type.getRawType() == Converter.class) {
      TypeToken<?> convertFromType = type.resolveType(Converter.class.getTypeParameters()[0]);
      TypeToken<?> convertToType = type.resolveType(Converter.class.getTypeParameters()[1]);
      @SuppressWarnings("unchecked") // returns default for both F and T
      T defaultConverter = (T) defaultConverter(convertFromType, convertToType);

        final Map<TypeVariable<?>, Type> map = GenericsUtil.getTypeVariableMap(Foo.class);
        assertThat(map, is(notNullValue()));
        assertThat(map.isEmpty(), is(false));
        assertThat(map.get(Foo.class.getTypeParameters()[0]), is(sameClass(Object.class)));
    }

    /**
     * @throws Exception
     */
    public void testGenericMethod() throws Exception {

        return Cast.uncheckedCast(wrapper.getRawClass());
    }

    public boolean isRawClassOfParameterizedType() {
        return wrapper instanceof ClassTypeWrapper && ((ClassTypeWrapper) wrapper).unwrap().getTypeParameters().length > 0;
    }

    public static ModelType<Object> untyped() {
        return UNTYPED;
    }

    public boolean isParameterized() {
        return wrapper instanceof ParameterizedTypeWrapper;