if ( handle instanceof DataSetHandle ) { if ( ( !( handle instanceof JointDataSetHandle ) && ( (DataSetHandle) handle ).getDataSource( ) == null ) || !DataSetUIUtil.hasMetaData( (DataSetHandle) handle ) ) { return false; } }
	protected static boolean isHandleValid( DesignElementHandle handle )	{		return handle.isValid( ) && handle.getSemanticErrors( ).isEmpty( );	}