}

    Field delegateField = SubBar.class.getDeclaredField("delegate");
    // barType is Bar<T>, a ParameterizedType with no generic arguments specified
    TypeToken<?> barType = TypeToken.of(delegateField.getGenericType());
    assertThat(barType.getSubtype(SubBar.class)).isEqualTo(new SubBar<Void>().fieldTypeAsSubBar());
  }

  @SuppressWarnings("unchecked") // To construct TypeToken<T> with TypeToken.of()

    }

    Field delegateField = SubBar.class.getDeclaredField("delegate");
    // barType is Bar<T>, a ParameterizedType with no generic arguments specified
    TypeToken<?> barType = TypeToken.of(delegateField.getGenericType());
    assertThat(barType.getSubtype(SubBar.class)).isEqualTo(new SubBar<Void>().fieldTypeAsSubBar());
  }

  @SuppressWarnings("unchecked") // To construct TypeToken<T> with TypeToken.of()

    } else {
      return null;
    }
  }

  /**
   * Returns the type token representing the generic type declaration of {@code cls}. For example:
   * {@code TypeToken.getGenericType(Iterable.class)} returns {@code Iterable<T>}.
   *
   * <p>If {@code cls} isn't parameterized and isn't a generic array, the type token of the class is
   * returned.
   */
  @VisibleForTesting