public Map/*< String, List< String > >*/ getParameters()
    {
        if(_parameters == null || !_parameters.hasParameters())
            return Collections.EMPTY_MAP;
        else return _parameters.getParameters();
    }
public Map getParameters ( ) { if ( _parameters == null || ! _parameters . hasParameters ( ) ) return Collections . EMPTY_MAP ; else return _parameters . getParameters ( ) ; }
Returns an unmodifiable {@link Map} of all parameters.

@return an unmodifiable {@link java.util.Map} of names and values for all parameters