public String convertInt(int i) {
    return convert(i);
  }
@Test
  // test ways for dealing with flowing i converter, as in "foo%ix"
  public void flowingI() {
    {
      FileNamePattern pp = new FileNamePattern("foo%i{}bar%i", context);
      assertEquals("foo3bar3", pp.convertInt(3));
    }
    {
      FileNamePattern pp = new FileNamePattern("foo%i{}bar%i", context);
      assertEquals("foo3bar3", pp.convertInt(3));
    }
  }