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
recentWorkspaces = new String[max];
			for(int i = 0; i < indices.length; ++i) {
				String path = indices[i].getString(XML.PATH);
				if(path == null)
					break;
				recentWorkspaces[i] = path; 
			}
			return;
		} catch (IOException e) {
			
		} catch (WorkbenchException e) {
			
		}
		finally {
			
			if(recentWorkspaces == null)
				recentWorkspaces = new String[RECENT_MAX_LENGTH];
		}
	}
	/**
	 * Return true if the protocol used to encode the argument memento is compatible
	 * with the receiver's implementation and false otherwise.
	 */
	private static boolean compatibleProtocol(IMemento memento) {
		IMemento protocolMemento = memento.getChild(XML.PROTOCOL);
		if(protocolMemento == null)
			return false;
		Integer version = protocolMemento.getInteger(XML.VERSION);
		return version != null && version.intValue() == PERS_ENCODING_VERSION;
	}