Creates a #GDateTime corresponding to the given Unix time t in UTC.
Unix time is the number of seconds that have elapsed since 1970-01-01 00:00:00 UTC.
This call can fail (returning null) if t represents a time outside of the supported range of #GDateTime.
You should release the return value by calling glib.date_time.DateTime.unref when you are done with it.
the Unix time
a new #GDateTime, or null
Creates a #GDateTime corresponding to the given Unix time t in UTC.
Unix time is the number of seconds that have elapsed since 1970-01-01 00:00:00 UTC.
This call can fail (returning null) if t represents a time outside of the supported range of #GDateTime.
You should release the return value by calling glib.date_time.DateTime.unref when you are done with it.