```
@Documented
@Inherited
@Retention(RUNTIME)
@Target(METHOD)
public @interface OnMayClose
```
Methods annotated with this will be called by the Workbench before the WorkbenchPart is closed. The method must be non-private, take zero arguments and return a boolean indicating whether the WorkbenchPart can be closed (true, it can be closed; false it cannot be closed).
This annotation only works on methods of classes annotated with @WorkbenchScreen or @WorkbenchEditor.

Annotation Type OnMayClose