code: function getInstanceRoute(machineName, versionKey, instanceKey){
  
          let manifest = getManifest();
  
          let machine = manifest.machines[machineName];
          if (!machine) {
              throw new Error("Machine does not exists");
          }
  
          let version = machine.versions[versionKey];
          if (!version) {
              throw new Error("Version does not exists");
          }
  
          let instance = version.instances[instanceKey];
          if (!instance) {
              throw new Error("Instance does not exists");
          }
  
          return instance.route;
      }
docs: Retrieve the instance's directory path
  @method getInstanceRoute
  @param {String} machineName The name of the machine
  @param {String} versionKey The key of the version
  @param {String} instanceKey The key of the instance
  @returns {String} The route