text:         // Copyright: 2014 PMSI-AlignAlytics
          // License: "https://github.com/PMSI-AlignAlytics/dimple/blob/master/MIT-LICENSE.txt"
          // Source: /src/objects/axis/methods/_hasTimeField.js
          this._hasTimeField = function () {
              return (this.timeField !== null && this.timeField !== undefined);
          };
  
  