/**
* Adds a working set descriptor.
*
* @param descriptor working set descriptor to add. Must not exist in the registry yet.
*/
public void addWorkingSetDescriptor(WorkingSetDescriptor descriptor) {
Assert.isTrue(
!workingSetDescriptors.containsValue(descriptor),
"working set descriptor already registered"); //$NON-NLS-1$
IExtensionTracker tracker = PlatformUI.getWorkbench().getExtensionTracker();
tracker.registerObject(
descriptor.getConfigurationElement().getDeclaringExtension(),
descriptor,
IExtensionTracker.REF_WEAK);
workingSetDescriptors.put(descriptor.getId(), descriptor);
}
