Bug 55056 [Workbench] would like to establish my workspace (and no longer be prompted)
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/ChooseWorkspaceData.java
if (persUrl == null)
				return;
			
			
			
			
			
			
			
			
			Reader reader = new FileReader(persUrl.getFile());
			XMLMemento memento = XMLMemento.createReadRoot(reader);
			if (memento == null || !compatibleProtocol(memento))
				return;
			IMemento recent = memento.getChild(XML.RECENT_WORKSPACES);
			if(recent == null)
				return;
			Integer maxLength = recent.getInteger(XML.MAX_LENGTH);
			int max = RECENT_MAX_LENGTH;
			if(maxLength != null)
				max = maxLength.intValue();
			IMemento indices[] = recent.getChildren(XML.WORKSPACE);
			if(indices == null || indices.length <= 0)
				return;
			
			
			
			max = Math.max(max, indices.length);