TypeResolver resolver = new TypeResolver().where(t, String.class);
    assertThrows(IllegalArgumentException.class, () -> resolver.where(t, String.class));
  }

  public <T1, T2 extends List<T1>> void testWhere_recursiveMapping() {
    Type t1 = new TypeCapture<T1>() {}.capture();
    Type t2 = new TypeCapture<T2>() {}.capture();
    assertEquals(t2, new TypeResolver().where(t1, t2).resolveType(t1));
  }