| Name | Description | Type | Package | Framework |
| ObservableSet | Set decorator that will trigger PropertyChangeEvents when a value changes. | Class | groovy.util | Groovy |
| ObservableSet .ChangeType | Class | groovy.util.ObservableSet | Groovy | |
| ObservableSet .ElementAddedEvent | Class | groovy.util.ObservableSet | Groovy | |
| ObservableSet .ElementClearedEvent | Class | groovy.util.ObservableSet | Groovy | |
| ObservableSet .ElementEvent | Class | groovy.util.ObservableSet | Groovy | |
| ObservableSet .ElementRemovedEvent | Class | groovy.util.ObservableSet | Groovy | |
| ObservableSet .MultiElementAddedEvent | Class | groovy.util.ObservableSet | Groovy | |
| ObservableSet .MultiElementRemovedEvent | Class | groovy.util.ObservableSet | Groovy | |