docs: public final Index createIndex(PersistentStore store, HsqlName name,
                                     int[] columns, boolean[] descending,
                                     boolean[] nullsLast, boolean unique, boolean migrating,
                                     boolean constraint, boolean forward) {
  
          Index newIndex = createAndAddIndexStructure(name, columns, descending,
              nullsLast, unique, migrating, constraint, forward);
  
          return newIndex;
      }