case PropertyDefn.SYSTEM_PROPERTY : case PropertyDefn.EXTENSION_PROPERTY : case PropertyDefn.ODA_PROPERTY :
case IPropertyDefn.SYSTEM_PROPERTY : case IPropertyDefn.EXTENSION_PROPERTY : case IPropertyDefn.ODA_PROPERTY :
	public boolean isVisible( )	{		boolean isVisible = true;		switch ( propDefn.getValueType( ) )		{			case PropertyDefn.SYSTEM_PROPERTY :			case PropertyDefn.EXTENSION_PROPERTY :			case PropertyDefn.ODA_PROPERTY :				IElementDefn elementDefn = getElementHandle( ).getDefn( );				if ( !elementDefn.isPropertyVisible( propDefn.getName( ) ) )					isVisible = false;				break;			case PropertyDefn.EXTENSION_MODEL_PROPERTY :				if ( !propDefn.isVisible( ) )					isVisible = false;				break;		}		return isVisible;	}