private Collection<String> lookupOriginatingNames(@Nullable String className, String fileName) {
    if (className != null) {
      Collection<String> dotsResult = myGeneratedToOriginatingMap.get(className.replace('/', '.'));
      // normalize classname: eclipse compiler sometimes outputs internal class names
      return dotsResult != null? dotsResult : myGeneratedToOriginatingMap.get(className.replace('.', '/'));
    }
    return myGeneratedToOriginatingMap.get(fileName);
  }
private Collection<String> lookupOriginatingNames(@Nullable String className, String fileName)