}
private void ensurePositionCategoryInstalled(final IDocument document, LinkedModeModel model) {
if (!document.containsPositionCategory(getCategory())) {
document.addPositionCategory(getCategory());
fUpdater= new InclusivePositionUpdater(getCategory());
document.addPositionUpdater(fUpdater);
model.addLinkingListener(new ILinkedModeListener() {
/*