Bug 315315 Warning messages seen while starting up workbench
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/model/impl/SerializerImpl.java
import org.eclipse.birt.chart.model.Serializer;
import org.eclipse.birt.chart.model.component.ChartPreferences;
import org.eclipse.birt.chart.model.util.ModelResourceFactoryImpl;
import org.eclipse.birt.chart.util.SecurityUtil;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.ecore.resource.Resource.IOWrappedException;
import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
import org.eclipse.emf.ecore.xmi.XMLResource;
/**
 * SerializerImpl
 */
public class SerializerImpl implements Serializer
{
	public static final String CHART_START_MARKER = "<!-- Chart Starts Here. -->"; 
	public static final String CHART_END_MARKER = "<!-- Chart Ends Here. -->"; 
	private static Serializer sz = null;
	static
	{
		EPackage.Registry.INSTANCE.put( ModelPackage.eNS_URI,
				ModelPackage.eINSTANCE );
	}
	/**
	 * Cannot invoke constructor; use instance() instead
	 */
	private SerializerImpl( )
	{
	}