Bug 214649 [Markers] Allow markerAttributeGroupings and markerGroups to be specified within contentGenerators
With everything at the top level it is hard to see the relation to a contentGenerator and the groups and attribute groupings. These should be sub elements a la menus.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/AttributeMarkerGrouping.java
return attribute;
	}
	/**
	 * Return the IConfigurationElement for the receiver.
	 * @return IConfigurationElement
	 */
	public IConfigurationElement getElement() {
		return element;
	}
	/**
	 * Add markerGroup to the list of referenced groups.
	 * @param markerGroup
	 */
	public void addGroup(MarkerGroup markerGroup) {
		groups.add(markerGroup);
		
	}
	/**
	 * Unmap the receiver from the groups
	 */
	public void unmap() {
		Iterator referencedGroups = groups.iterator();
		while(referencedGroups.hasNext()){
			MarkerGroup group = (MarkerGroup)referencedGroups.next();
			group.unmap(this);
		}
		
	}
}