Bug 316298 [Compatibility] Support o.e.ui.menus visibleWhen
We need support in MCoreExpression for entire expressions created by the WorkbenchMenuService. They don't often use ReferenceExpressions to core expression definitions. PW
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/ui/workbench/UIEvents.java
public static final String TOPIC = UITopicBase + "/commands/Parameter"; 
		public static final String NAME = "name"; 
		public static final String VALUE = "value"; 
	}
	public static interface PartDescriptor {
		public static final String TOPIC = UITopicBase + "/basic/PartDescriptor"; 
		public static final String ALLOWMULTIPLE = "allowMultiple"; 
		public static final String CATEGORY = "category"; 
		public static final String CLOSEABLE = "closeable"; 
		public static final String CONTRIBUTIONURI = "contributionURI"; 
		public static final String DIRTYABLE = "dirtyable"; 
		public static final String MENUS = "menus"; 
		public static final String TOOLBAR = "toolbar"; 
	}
	public static interface PartDescriptorContainer {
		public static final String TOPIC = UITopicBase + "/basic/PartDescriptorContainer"; 
		public static final String DESCRIPTORS = "descriptors"; 
	}
	public static interface Application {
		public static final String TOPIC = UITopicBase + "/application/Application"; 
		public static final String ADDONS = "addons"; 
		public static final String COMMANDS = "commands"; 
	}
	public static interface ApplicationElement {
		public static final String TOPIC = UITopicBase + "/application/ApplicationElement"; 
		public static final String ELEMENTID = "elementId"; 
		public static final String TAGS = "tags"; 
	}
	public static interface Contribution {