Bug 117526 [Contributions] [Commands] Javadoc warnings in N20051122-0010
/builds/N/src/plugins/org.eclipse.platform.doc.isv/../org.eclipse.core.commands/src/org/eclipse/core/commands/INamedHandleStateIds.java:30: warning - Tag @link: Class or Package not found: NamedHandleObjectWithState /builds/N/src/plugins/org.eclipse.platform.doc.isv/../org.eclipse.core.commands/src/org/eclipse/core/commands/Command.java:581: warning - @param argument "state" is not a parameter name. /builds/N/src/plugins/org.eclipse.platform.doc.isv/../org.eclipse.jface/src/org/eclipse/jface/commands/RadioState.java:46: warning - Tag @link: Class or Package not found: Boolean.TRUE /builds/N/src/plugins/org.eclipse.platform.doc.isv/../org.eclipse.jface/src/org/eclipse/jface/commands/RadioState.java:46: warning - Tag @link: Class or Package not found: Boolean.FALSE /builds/N/src/plugins/org.eclipse.platform.doc.isv/../org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/handlers/RegistryRadioState.java:51: warning - Tag @link: Class or Package not found: Boolean.FALSE
bundles/org.eclipse.core.commands/src/org/eclipse/core/commands/Command.java
commandListeners.add(commandListener);
	}
	/**
	 * Adds a listener to this command that will be notified when this command
	 * is about to execute.
	 * 
	 * @param executionListener
	 *            The listener to be added; must not be <code>null</code>.
	 */
	public final void addExecutionListener(
			final IExecutionListener executionListener) {
		if (executionListener == null) {
			throw new NullPointerException(
					"Cannot add a null execution listener"); 
		}
		if (executionListeners == null) {
			executionListeners = new ArrayList(1);
		} else if (executionListeners.contains(executionListener)) {
			return;
		}
		executionListeners.add(executionListener);
	}
	/**
	 * <p>
	 * Adds a state to this command. This will add this state to the active
	 * handler, if the active handler is an instance of {@link IObjectWithState}.
	 * </p>
	 * 
	 * @param id
	 *            The identifier of the state to add; must not be