code: function(nodeCount) {
      if (!common.isNumber(nodeCount)) { return new Error('count of nodes is not number'); }
  
      this.nodeCount = nodeCount;
      this.badNodes = {};
      this.recoverTime = JS_CONSTANTS.DEFAULT_RECOVER_TIME;
  }
docs: After what time [s] can be a failed node reused in load balancing. DEFAULT_RECOVER_TIME = 30; 
  Constructor.
  
  @params nodeCount count of nodes to be balanced