code: function append (value, string) {
    if (
      value === null || value === undefined || value === '' ||
      string === null || string === undefined
    ) {
      return value
    }
    return value + string
  }
docs: Append the given string to the value, unless the value is empty.
  @param {string} value - The value to append to
  @returns {string} The appended result