Bug 190061 [Metadata] Update @since tags for new API
Patch to follow
bundles/org.eclipse.core.commands/src/org/eclipse/core/commands/Command.java
final Object[] listeners = executionListeners.getListeners();
			for (int i = 0; i < listeners.length; i++) {
				final IExecutionListener listener = (IExecutionListener) listeners[i];
				listener.preExecute(getId(), event);
			}
		}
	}
	/**
	 * Returns the category for this command.
	 * 
	 * @return The category for this command; never <code>null</code>.
	 * @throws NotDefinedException
	 *             If the handle is not currently defined.
	 */
	public final Category getCategory() throws NotDefinedException {
		if (!isDefined()) {
			throw new NotDefinedException(
					"Cannot get the category from an undefined command. " 
							+ id);
		}
		return category;
	}
	/**
	 * Returns the current handler for this command. This is used by the command
	 * manager for determining the appropriate help context identifiers and by
	 * the command service to allow handlers to update elements.
	 * <p>
	 * This value can change at any time and should never be cached.
	 * </p>
	 *