code: function replaceStringPlaceholders(string, args) {
      for (var i = 1; i < args.length; i++) {
          var value = args[i];
          if (typeof value === "object") {
              value = JSON.stringify(value);
          }
  
          string = string.replace("{}", value);
      }
  
      return string;
  }
docs: Replaces each instance of "{}" in the input string with a string value corresponding
  to the arguments passed in to the function.
  
  @param {string} string - The string to replace in
  @returns {string} A string with placeholders replaced