Bug 149922 Image builder - URI and file source type are treated as same
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/writer/ModuleWriter.java
public void visitCell( Cell obj )
	{
		writer.startElement( DesignSchemaConstants.CELL_TAG );
		writer.attribute( DesignSchemaConstants.ID_ATTRIB, new Long( obj
				.getID( ) ).toString( ) );
		attribute( obj, DesignSchemaConstants.VIEW_ACTION_ATTRIB,
				DesignElement.VIEW_ACTION_PROP );
		super.visitCell( obj );
		property( obj, Cell.COLUMN_PROP );
		property( obj, Cell.COL_SPAN_PROP );
		property( obj, Cell.ROW_SPAN_PROP );
		property( obj, Cell.DROP_PROP );
		property( obj, Cell.HEIGHT_PROP );
		property( obj, Cell.WIDTH_PROP );
		property( obj, Cell.EVENT_HANDLER_CLASS_PROP );
		property( obj, Cell.ON_PREPARE_METHOD );
		property( obj, Cell.ON_CREATE_METHOD );
		property( obj, Cell.ON_RENDER_METHOD );
		writeStyle( obj );
		writeContents( obj, Cell.CONTENT_SLOT, null );
		writer.endElement( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.design.elements.DesignVisitor#visitGrid(org.eclipse.birt.report.model.design.elements.GridItem)
	 */
	public void visitGrid( GridItem obj )
	{