Bug 299208 [CommonNavigator] More helpful error message when an invalid suppressedExtensionId is referenced
The current error message does not show the if of the NCE that had the bad reference.
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/internal/navigator/extensions/NavigatorContentDescriptorManager.java
theFoundDescriptors.addAll(overridingDescriptors);
				}
			} else if (isApplicable) {
				theFoundDescriptors.add(descriptor);
			}
		}
		return initialSize < theFoundDescriptors.size();
	}
	/**
	 * Returns the navigator content descriptor with the given id.
	 * 
	 * @param id
	 *            The id of the content descriptor that should be returned
	 * @return The content descriptor of the given id
	 */
	public NavigatorContentDescriptor getContentDescriptor(String id) {
		return (NavigatorContentDescriptor) allDescriptors.get(id);
	}
	/**
	 * 
	 * @param descriptorId
	 *            The unique id of a particular descriptor
	 * @return The name (value of the 'name' attribute) of the given descriptor
	 */
	public String getText(String descriptorId) {
		INavigatorContentDescriptor descriptor = getContentDescriptor(descriptorId);
		if (descriptor != null) {
			return descriptor.getName();
		}
		return descriptorId;