Bug 306576 Externalization/translation of strings in xmi files
Currently our e4xmi files have various hard-coded English strings that are presented to the user (in particular the "label" attributes). Is there some mechanism already defined for externalization/translation of NLS strings from these xmi files? If not, we need to define one. Creating a new xmi file from scratch for each language won't scale, and won't allow switching languages after the product is installed.
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/ui/workbench/UIEvents.java
public static final String TOPIC = UITopicBase + "/commands/Command"; 
		public static final String CATEGORY = "category"; 
		public static final String COMMANDNAME = "commandName"; 
		public static final String DESCRIPTION = "description"; 
		public static final String PARAMETERS = "parameters"; 
	}
	public static interface CommandParameter {
		public static final String TOPIC = UITopicBase + "/commands/CommandParameter"; 
		public static final String NAME = "name"; 
		public static final String OPTIONAL = "optional"; 
		public static final String TYPEID = "typeId"; 
	}
	public static interface Handler {
		public static final String TOPIC = UITopicBase + "/commands/Handler"; 
		public static final String COMMAND = "command"; 
	}
	public static interface HandlerContainer {
		public static final String TOPIC = UITopicBase + "/commands/HandlerContainer"; 
		public static final String HANDLERS = "handlers"; 
	}
	public static interface KeyBinding {
		public static final String TOPIC = UITopicBase + "/commands/KeyBinding"; 
		public static final String COMMAND = "command"; 
		public static final String PARAMETERS = "parameters"; 
	}
	public static interface KeySequence {