Bug 221521 [Markers] New markers API needs to be pared down
We have too much API in some of the new classes and they can be moved to internals
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/MarkerFieldFilterGroup.java
if (element == null) {
			String nameString = memento
					.getString(MarkerSupportConstants.ATTRIBUTE_NAME);
			if (nameString != null && nameString.length() > 0)
				name = nameString;
			String idString = memento.getString(IMemento.TAG_ID);
			if (idString != null && idString.length() > 0)
				id = idString;
		}
	}
	/**
	 * Make a working copy of the receiver.
	 * 
	 * @return MarkerFieldFilterGroup or <code> null</code> if it failed.
	 */
	MarkerFieldFilterGroup makeWorkingCopy() {
		MarkerFieldFilterGroup clone = new MarkerFieldFilterGroup(this.element,
				this.builder);
		if (populateClone(clone))
			return clone;
		return null;
	}
	/**
	 * Populate the clone and return true if successful.
	 * 
	 * @param clone
	 */
	protected boolean populateClone(MarkerFieldFilterGroup clone) {
		clone.scope = this.scope;
		clone.workingSet = this.workingSet;