code: function(key,options){
          this.key = key;
          
          var route = "",
              dayroute = "",
              timeroute = "",
              debug = false;
          
          if (!this.key || this.key == "" || this.key == "<YOU-API-KEY>") {
              throw new Error('MTA API key missing or incorrect.');
          }
  
          if (options.debug){
              debug = options.debug;
          }
  
          if (options.from.id && options.to.id) {
              route = options.from.id + "/" + options.to.id;
          }else{
              throw new Error('You forgot to provide an origin or a destiny.');
          }
      
          //date part
          if (options.day >= UTILS.nowDate()) {
              let dayParts= options.day.split("-");
              dayroute = dayParts[0] + "/" + dayParts[1] + "/" + dayParts[2];
          } else {
              let dayParts= UTILS.nowDate().split("-");
              dayroute = dayParts[0] + "/" + dayParts[1] + "/" + dayParts[2];
          }
      
          //time part
          if (options.time >= UTILS.nowTime) {
              timeroute = options.time.replace(/:/g, '');
          } else { 
              timeroute = UTILS.nowTime().replace(/:/g, '');
          }
          
          let json_req_url = API_URL + "/" + API_VER + "/" + route + "/DepartBy/" + dayroute  + "/" + timeroute + "/" + this.key + "/" + API_FILE;
          return new Promise(function (resolve, reject) {
              if(debug==true){
                  resolve(json_req_url);
              }else{
                  FETCH(json_req_url)
                  .then(
                      data => resolve(data.json())
                  ).catch(
                      err => reject("Error: Unable to parse response as JSON: " + err.message)
                  );
              }
          });
      }
docs: returns an array with the schedule