code: function getBoxWidth(labelOpts, fontSize) {
  	return labelOpts.usePointStyle && labelOpts.boxWidth > fontSize ?
  		fontSize :
  		labelOpts.boxWidth;
  }
docs: Helper function to get the box width based on the usePointStyle option
  @param {object} labelopts - the label options on the legend
  @param {number} fontSize - the label font size
  @return {number} width of the color box area