dimple-js/src/objects/axis/methods/_getTopMaster.js

Dimple is an object-oriented API allowing you to create flexible axis-based charts using [d3.js](http://d3js.org "d3.js").

        // Copyright: 2015 AlignAlytics
        // License: "https://github.com/PMSI-AlignAlytics/dimple/blob/master/MIT-LICENSE.txt"
        // Source: /src/objects/axis/methods/_getTopMaster.js
        this._getTopMaster = function () {
            // The highest level master
            var topMaster = this;
            if (this.master !== null && this.master !== undefined) {
                topMaster = this.master._getTopMaster();
            }
            return topMaster;
        };