code: public String getOriginalPackageName()
      {
          if (packageName == null)
              return null;
  
          String original = packageName.getLast();
          return original != null ? original : packageName.getValue();
      }
docs: Returns the package name that was configured in the proto. Note that {@link #getPackageName()} will have the same
  value as this, if the compiler options did not have entries that override it.