Bug 190061 [Metadata] Update @since tags for new API
Patch to follow
bundles/org.eclipse.core.commands/src/org/eclipse/core/commands/Command.java
buffer.append("no handler"); 
			} else {
				buffer.append('\'');
				buffer.append(handler);
				buffer.append("' as its handler"); 
			}
			Tracing.printTrace("HANDLERS", buffer.toString()); 
		}
		
		fireCommandChanged(new CommandEvent(this, false, false, false, true,
				false, false, false, false, enabled != isEnabled()));
		return true;
	}
	/**
	 * @return
	 */
	private IHandlerListener getHandlerListener() {
		if (handlerListener == null) {
			handlerListener = new IHandlerListener() {
				public void handlerChanged(HandlerEvent handlerEvent) {
					boolean enabledChanged = handlerEvent.isEnabledChanged();
					boolean handledChanged = handlerEvent.isHandledChanged();
					fireCommandChanged(new CommandEvent(Command.this, false,
							false, false, handledChanged, false, false, false,
							false, enabledChanged));
				}
			};
		}
		return handlerListener;
	}