whole_func_string: function toHexString(num) {
      var str = num.toString(16);
  
      while (str.length < 2) {
          str = '0' + str;
      }
  
      return str;
  }
func_code_string: function toHexString(num) {
      var str = num.toString(16);
  
      while (str.length < 2) {
          str = '0' + str;
      }
  
      return str;
  }
func_documentation_string: Converts from a number like 15 to a hex string like 'F'
  @param {number} num
  @returns {string}