docs: public static final String connectObjects(Collection<?> ns) {
  
          if (ns == null || ns.size() == 0) {
              return "()";
          }
  
          StringBuilder sb = new StringBuilder(ns.size() * 8);
          int size = ns.size();
          for (int i = 0; i < size; i++) {
              sb.append(",?");
          }
  
          sb.setCharAt(0, '(');
          sb.append(')');
          return sb.toString();
      }