Bug 187178 Remove Total.* from expression build
The Total java script object is no longer supported by BIRT. It should be removed from Expression builder.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dialogs/ExpressionTreeSupport.java
/**
	 * Sets the tree model.
	 * 
	 * @param tree
	 */
	public void setTree( Tree tree )
	{
		this.tree = tree;
	}
	protected Tree getTree( )
	{
		return tree;
	}
	/**
	 * Sets the viewer to use.
	 * 
	 * @param expressionViewer
	 */
	public void setExpressionViewer( SourceViewer expressionViewer )
	{
		this.expressionViewer = expressionViewer;
	}
	protected SourceViewer getExpressionViewer( )
	{
		return expressionViewer;
	}
	/**
	 * Gets an icon image by the key in plugin.properties
	 * 
	 * @param id