return of(subtype.getGenericComponentType()).isSubtypeOf(thisClass.getComponentType());
    } else if (runtimeType instanceof GenericArrayType) {
      return of(subtype.getGenericComponentType())
          .isSubtypeOf(((GenericArrayType) runtimeType).getGenericComponentType());
    } else {
      return false;
    }
  }

  /**
   * {@code A.is(B)} is defined as {@code Foo<A>.isSubtypeOf(Foo<B>)}.
   *

        new TypeToken<SingleGenericExtendsBase<String>>() {};
    assertTrue(subtype.isSubtypeOf(supertype));
    ParameterizedType actualSubtype =
        (ParameterizedType) supertype.getSubtype(subtype.getRawType()).getType();
    assertEquals(SingleGenericExtendsBase.class, actualSubtype.getRawType());
    assertTrue(TypeToken.of(actualSubtype).isSubtypeOf(supertype));
  }

        new TypeToken<SingleGenericExtendsBase<String>>() {};
    assertTrue(subtype.isSubtypeOf(supertype));
    ParameterizedType actualSubtype =
        (ParameterizedType) supertype.getSubtype(subtype.getRawType()).getType();
    assertEquals(SingleGenericExtendsBase.class, actualSubtype.getRawType());
    assertTrue(TypeToken.of(actualSubtype).isSubtypeOf(supertype));
  }