Bug 323489 [KeyBindings] Reduce memory footprint of BindingManager
bundles/org.eclipse.jface/src/org/eclipse/jface/bindings/BindingManager.java
*         defined.
	 */
	public final Scheme getActiveScheme() {
		return activeScheme;
	}
	/**
	 * Gets the best active binding for a command. The best binding is the one
	 * that would be most appropriate to show in a menu. Bindings which belong
	 * to a child scheme are given preference over those in a parent scheme.
	 * Bindings which belong to a particular locale or platform are given
	 * preference over those that do not. The rest of the calculaton is based
	 * most on various concepts of "length", as well as giving some modifier
	 * keys preference (e.g., <code>Alt</code> is less likely to appear than
	 * <code>Ctrl</code>).
	 * 
	 * @param commandId
	 *            The identifier of the command for which the best active
	 *            binding should be retrieved; must not be <code>null</code>.
	 * @return The trigger sequence for the best binding; may be
	 *         <code>null</code> if no bindings are active for the given
	 *         command.
	 * @since 3.2
	 */
	public final TriggerSequence getBestActiveBindingFor(final String commandId) {
		return getBestActiveBindingFor(new ParameterizedCommand(commandManager.getCommand(commandId), null));
	}
	
	/**
	 * @param command
	 * @return