public static AllowedCharactersBitmap GetAllowedCharacters(this TextEncoderSettings settings)
{
object bitmap = settings.GetType().InvokeMember("GetAllowedCharacters", BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.InvokeMethod, null, settings, null);
object underlyingArray = bitmap.GetType().GetField("_allowedCharacters", BindingFlags.Instance | BindingFlags.NonPublic).GetValue(bitmap);
return((AllowedCharactersBitmap)typeof(AllowedCharactersBitmap).GetConstructor(BindingFlags.NonPublic | BindingFlags.Instance, null, new Type[] { typeof(uint[]) }, null).Invoke(new object[] { underlyingArray }));
}