Bug 223246 [Markers] Rename markerFieldFilterGrouping
markerFieldFilterGrouping is not meaningful name for something that is really a markerFieldConfiguration definition. Added to the fact that we also have markerGroupings this is very confusing.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/MarkerContentGenerator.java
/**
	 * Add the extensions to the receiver.
	 * 
	 * @param extensions
	 *            Collection of {@link IConfigurationElement}
	 */
	public void addExtensions(Collection extensions) {
		generatorExtensions = extensions;
	}
	/**
	 * Add all of the markerGroups defined in element.
	 * 
	 * @param groups
	 */
	private void addGroupsFrom(IConfigurationElement element, Collection groups) {
		IConfigurationElement[] groupings = element
				.getChildren(MarkerSupportRegistry.MARKER_GROUPING);
		for (int i = 0; i < groupings.length; i++) {
			groups.add(MarkerGroup.createMarkerGroup(groupings[i]));
		}
	}
	/**
	 * Return whether or not all of {@link MarkerTypesModel} arein
	 * the selectedTypes.
	 * @param selectedTypes
	 * @return boolean
	 */
	boolean allTypesSelected(Collection selectedTypes) {
		return selectedTypes.containsAll(markerTypes);
	}