Provides support for retrieving information on Commands from the workbench.

## Package Specification

Most of org.eclipse.ui.commands.* is depracated in favour of org.eclipse.core.commands, but the ICommandService and associated classes are used to access the workbench view of org.eclipse.core.commands. `getService(ICommandService.class)` can be used to get the ICommandService from the workbench, workbench window, or part site.