return constructor.newInstance(args);
      } catch (InstantiationException e) {
        throw new RuntimeException(constructor + " failed.", e);
      }
    }

    /**
     * If the class is parameterized, such as {@link java.util.ArrayList ArrayList}, this returns
     * {@code ArrayList<E>}.
     */
    @Override
    Type getGenericReturnType() {
      Class<?> declaringClass = getDeclaringClass();