code: function () {
      const oThis = this
        , promiseArray = [];
  
      return new Promise(async function (onResolve, onReject) {
        for (var chain in setupConfig.chains) {
          promiseArray.push(oThis._isRunning(chain));
        }
        return Promise.all(promiseArray).then(onResolve);
      });
    }
docs: Check if chains started mining and are ready
  
  @return {promise}