Bug 315315 Warning messages seen while starting up workbench
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/util/PluginSettings.java
};
	/**
	 * All available display servers provided in the out-of-the-box distribution
	 */
	private static String[][] saDisplayServers = {
			{
					"ds.SWING", "org.eclipse.birt.chart.device.swing.SwingDisplayServer" 
			},
			{
					"ds.SWT", "org.eclipse.birt.chart.device.swt.SwtDisplayServer" 
			},
			{
					"ds.SVG", "org.eclipse.birt.chart.device.svg.SVGDisplayServer" 
			},
			{
					"ds.PDF", "org.eclipse.birt.chart.device.pdf.PDFDisplayServer" 
			}
	};
	
	/**
	 * All available default aggregation names.
	 * @since 2.3
	 *
	 */
	public static final class DefaultAggregations
	{
		public static final String SUM = "Sum"; 
		public static final String AVERAGE = "Average"; 
		public static final String COUNT = "Count"; 
		public static final String DISTINCT_COUNT = "DistinctCount";