Bug 258810 [Markers] Markers for the entire workspace show up when working set empty
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/MarkerFieldFilterGroup.java
public void setName(String newName) {
		name = newName;
	}
	/**
	 * Set the scope of the receiver.
	 * 
	 * @param newScope
	 */
	public void setScope(int newScope) {
		scope = newScope;
	}
	/**
	 * Set the working set of the receiver.
	 * 
	 * @param workingSet
	 */
	void setWorkingSet(IWorkingSet workingSet) {
		this.workingSet = workingSet;
		workingSetPaths = null;
	}
	/**
	 * IResourceChangeListener, a better option??
	 * 
	 */	
	void refresh() {
		 computeWorkingSetResources();
		 getWorkingSetPaths();
	}
}