code: @WithBridgeMethods(value = OracleQuery.class, castRequired = true)
      public C orderSiblingsBy(Expression<?> path) {
          return addFlag(Position.BEFORE_ORDER, ORDER_SIBLINGS_BY, path);
      }
docs: ORDER SIBLINGS BY preserves any ordering specified in the hierarchical query clause and then
  applies the order_by_clause to the siblings of the hierarchy.
  
  @param path path
  @return the current object