Bug 316279 MCommand's 'parameters' feature is not being persisted correctly
SSIA
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/ui/internal/workbench/XMLModelReconciler.java
List<FeatureChange> featureChanges = entry.getValue();
		for (FeatureChange featureChange : featureChanges) {
			
			if (!featureChange.getFeature().isTransient()) {
				String featureName = featureChange.getFeatureName();
				
				if (shouldPersist(featureName)) {
					if (modelChange == null) {
						
						modelChange = createElement(document, object);
					}
					
					Element deltaElement = createDeltaElement(document, object, featureChange,
							featureName);
					modelChange.appendChild(deltaElement);
				}
			}
		}
		return modelChange;
	}
	private String getEntryElementName(EObject object, Entry<?, ?> entry) {
		if (object instanceof MContext) {
			for (Entry<String, String> property : ((MContext) object).getProperties().entrySet()) {
				if (property == entry) {
					return CONTEXT_PROPERTIES_ATTNAME;
				}
			}
		}
		if (object instanceof MContribution) {
			for (Entry<String, String> state : ((MContribution) object).getPersistedState()