constructor(options) {
    this.setOptions(options);

    /**
     * Each cell will have it's `x` and `y` values set by the `layout-manager` prior to
     * `init` being called;
     * @type {Number}
     */
    this.x = null;
    this.y = null;
  }
Each cell will have it's `x` and `y` values set by the `layout-manager` prior to
`init` being called;
@type {Number}