private void setComboboxModel(@Nullable VirtualFile sourceRoot, @Nullable VirtualFile oldSelection, boolean forceIncludeAll) {
    myAlarm.cancelAllRequests();
    myAlarm.addRequest(() -> setComboboxModelInternal(sourceRoot, oldSelection, forceIncludeAll), 300, ModalityState.stateForComponent(this));
  }
private void setComboboxModel(@Nullable VirtualFile sourceRoot, @Nullable VirtualFile oldSelection, boolean forceIncludeAll)