if ( !visitParameterGroup( (ParameterGroupHandle) param ) )
if ( !visitScalarParameter( (ScalarParameterHandle) param ) )
		boolean visitParametersInGroup( ParameterGroupHandle group )		{			SlotHandle parameters = group.getParameters( );			Iterator iter = parameters.iterator( );			while ( iter.hasNext( ) )			{				Object param = iter.next( );				if ( param instanceof ParameterGroupHandle )				{					if ( !visitParameterGroup( (ParameterGroupHandle) param ) )					{						return false;					}				}				else if ( param instanceof ScalarParameterHandle )				{					if ( !visitParameterGroup( (ParameterGroupHandle) param ) )					{						return false;					}				}			}			return true;		}