Bug 190061 [Metadata] Update @since tags for new API
Patch to follow
bundles/org.eclipse.core.commands/src/org/eclipse/core/commands/Command.java
* is undefined. It may also be empty.
	 */
	private IParameter[] parameters = null;
	/**
	 * The type of the return value of this command. This value may be
	 * <code>null</code> if the command does not declare a return type.
	 * 
	 * @since 3.2
	 */
	private ParameterType returnType = null;
	/**
	 * Our command will listen to the active handler for enablement changes so
	 * that they can be fired from the command itself.
	 * 
	 * @since 3.3
	 */
	private IHandlerListener handlerListener;
	/**
	 * Constructs a new instance of <code>Command</code> based on the given
	 * identifier. When a command is first constructed, it is undefined.
	 * Commands should only be constructed by the <code>CommandManager</code>
	 * to ensure that the identifier remains unique.
	 * 
	 * @param id
	 *            The identifier for the command. This value must not be
	 *            <code>null</code>, and must be unique amongst all commands.
	 */
	Command(final String id) {
		super(id);
	}