Bug 331010 Track Model-Element contributors
We need to track which bundle contributed an model element to e.g. look up translations in the right package
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/ui/internal/workbench/PartServiceImpl.java
MUIElement intermediate = parent;
		if (intermediate == null) {
			intermediate = part;
		} else {
			while (parent != null) {
				if (parent instanceof MContext) {
					if (((MContext) parent).getContext() != null)
						return (MContext) parent;
				}
				intermediate = parent;
				parent = parent.getParent();
			}
		}
		MPlaceholder placeholder = modelService.findPlaceholderFor(getWindow(), intermediate);
		parent = placeholder.getParent();
		while (parent != null) {
			if (parent instanceof MContext) {
				if (((MContext) parent).getContext() != null)
					return (MContext) parent;
			}
			parent = parent.getParent();
		}
		return null;
	}
	public void bringToTop(MPart part) {
		if (isInContainer(part)) {
			MUIElement currentElement = part;
			MElementContainer<MUIElement> parent = part.getParent();
			if (parent == null) {
				currentElement = modelService.findPlaceholderFor(getWindow(), part);