Bug 186403 [KeyBindings] provide conflict information to users outside of logging
bundles/org.eclipse.jface/src/org/eclipse/jface/bindings/BindingManager.java
childContextId = parentContextId;
				} catch (final NotDefinedException e) {
					break; 
				}
			}
		}
		return contextTree;
	}
	/**
	 * <p>
	 * Creates a tree of context identifiers, representing the hierarchical
	 * structure of the given contexts. The tree is structured as a mapping from
	 * child to parent. In this tree, the key binding specific filtering of
	 * contexts will have taken place.
	 * </p>
	 * <p>
	 * This method completes in <code>O(n^2)</code>, where <code>n</code>
	 * is the height of the context tree.
	 * </p>
	 * 
	 * @param contextIds
	 *            The set of context identifiers to be converted into a tree;
	 *            must not be <code>null</code>.
	 * @return The tree of contexts to use; may be empty, but never
	 *         <code>null</code>. The keys and values are both strings.
	 */
	private final Map createFilteredContextTreeFor(final Set contextIds) {
		
		boolean dialog = false;
		boolean window = false;