code: function() {
              return this.attrs.height === AUTO ? (this.getTextHeight() * this.textArr.length * this.getLineHeight()) + this.getPadding() * 2 : this.attrs.height;
          }
docs: get the height of the text area, which takes into account multi-line text, line heights, and padding
  @method
  @memberof Kinetic.Text.prototype
  @returns {Number}