
  [;1m-spec universaltime_to_localtime(Universaltime) -> Localtime[0m
  [;1m                                    when[0m
  [;1m                                        Localtime :: calendar:datetime(),[0m
  [;1m                                        Universaltime ::[0m
  [;1m                                            calendar:datetime().[0m

  Converts Universal Time Coordinated (UTC) date and time to local
  date and time in the form [;;4m{{Year, Month, Day}, {Hour, Minute,[0m
  [;;4mSecond}}[0m if supported by the underlying OS. Otherwise no
  conversion is done, and [;;4mUniversaltime[0m is returned.

  For example:

    > erlang:universaltime_to_localtime({{1996,11,6},{14,18,43}}).
    {{1996,11,7},{15,18,43}}

  Failure: [;;4mbadarg[0m if [;;4mUniversaltime[0m denotes an invalid date and
  time.
