public final ObservableList<WorkbenchModule> getOpenModules() {
        return FXCollections.unmodifiableObservableList(openModules);
    }
Returns an unmodifiableObservableList of the currently open modules.

@return an unmodifiableObservableList of the currently open modules.
workbenchfx-core/src/main/java/com/dlsc/workbenchfx/Workbench.java