public String getOriginalPackageName()
    {
        if (packageName == null)
            return null;

        String original = packageName.getLast();
        return original != null ? original : packageName.getValue();
    }
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.
protostuff-parser/src/main/java/io/protostuff/parser/Proto.java