public void TestFlags()
{
// should support flags
Transformation transformation = new Transformation().Flags("abc");
String result = m_api.UrlImgUp.Transform(transformation).BuildUrl("test");
Assert.AreEqual(m_defaultImgUpPath + "fl_abc/test", result);
transformation = new Transformation().Flags("abc", "def");
result = m_api.UrlImgUp.Transform(transformation).BuildUrl("test");
Assert.AreEqual(m_defaultImgUpPath + "fl_abc.def/test", result);
}