if ( provider != null )
if ( provider != null && !( provider instanceof OdaDummyProvider ) )
	public ElementPropertyDefn getPropertyDefn( String propName )	{		assert propName != null;		ElementPropertyDefn propDefn = super.getPropertyDefn( propName );		if ( propDefn != null )			return propDefn;		if ( provider != null )			return (ElementPropertyDefn) provider.getPropertyDefn( propName );		return propDefn;	}