Bug 323489 [KeyBindings] Reduce memory footprint of BindingManager
bundles/org.eclipse.jface/src/org/eclipse/jface/bindings/BindingManager.java
}
					context = contextManager.getContext(parentId);
					parentId = context.getParentId();
				}
			} catch (NotDefinedException e) {
				
				
				contextIdItr.remove();
				
				if (context == null || !bindingErrors.contains(context.getId())) {
					if (context != null) {
						bindingErrors.add(context.getId());
					}
					
					Policy
							.getLog()
							.log(
									new Status(
											IStatus.ERROR,
											Policy.JFACE,
											IStatus.OK,
											"Undefined context while filtering dialog/window contexts", 
											e));
				}
			}
		}
		return createContextTreeFor(contextIds);
	}
	/**
	 * <p>