Bug 55628 Ctrl+o Filters not persistent when set via view menu
I20040322
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/actions/CustomFiltersActionGroup.java
* @since 3.0
	 */
	private void saveLRUFilters(IMemento memento) {
		if(fLRUFilterIdsStack != null && !fLRUFilterIdsStack.isEmpty()) {
			IMemento lruFilters= memento.createChild(TAG_LRU_FILTERS);
			Iterator iter= fLRUFilterIdsStack.iterator();
			while (iter.hasNext()) {
				String id= (String)iter.next();
				IMemento child= lruFilters.createChild(TAG_CHILD);
				child.putString(TAG_FILTER_ID, id);
			}
		}
	}
	private void saveUserDefinedPatterns(IMemento memento) {
		if(fUserDefinedPatterns != null && fUserDefinedPatterns.length > 0) {
			IMemento userDefinedPatterns= memento.createChild(TAG_USER_DEFINED_PATTERNS);
			for (int i= 0; i < fUserDefinedPatterns.length; i++) {
				IMemento child= userDefinedPatterns.createChild(TAG_CHILD);
				child.putString(TAG_PATTERN, fUserDefinedPatterns[i]);
			}
		}
	}
	/**
	 * Restores the state of the filter actions from a memento.
	 * <p>
	 * Note: This method does not refresh the viewer.
	 * </p>
	 * 
	 * @param memento the memento from which the state is restored
	 */