Bug 187796 [KeyBindings] IBindingService cannot return best active bindings for a ParameterizedCommand
IBindingService only supports getBestActiveBindingFor(final String commandId) ... there must be an equivalent method for ParameterizedCommands PW
bundles/org.eclipse.jface/src/org/eclipse/jface/bindings/BindingManager.java
* <p>
 * The binding manager is very sensitive to performance. Misusing the manager
 * can render an application unenjoyable to use. As such, each of the public
 * methods states the current run-time performance. In future releases, it is
 * guaranteed that the method will run in at least the stated time constraint --
 * though it might get faster. Where possible, we have also tried to be memory
 * efficient.
 * </p>
 * 
 * @since 3.1
 */
public final class BindingManager extends HandleObjectManager implements
		IContextManagerListener, ISchemeListener {
	/**
	 * This flag can be set to <code>true</code> if the binding manager should
	 * print information to <code>System.out</code> when certain boundary
	 * conditions occur.
	 */
	public static boolean DEBUG = false;
	/**
	 * Returned for optimized lookup.
	 */
	private static final TriggerSequence[] EMPTY_TRIGGER_SEQUENCE = new TriggerSequence[0];
	/**
	 * The separator character used in locales.
	 */
	private static final String LOCALE_SEPARATOR = "_"; 
	/**
	 * </p>
	 * A utility method for adding entries to a map. The map is checked for