String isoTime(Time t, [IsoTimeOpts] opts=, Int tzOffs=0)
t: The Time
opts: A list of IsoTimeOpts options. This argument may be omitted and defaults to the empty list.
tzOffs: The offset of the timezone from UTC in seconds. This argument is usually only used internally by isoTime for conversion from Unix timestamps
Returns a String containing the ISO-8601 representation of a Time. This can then be used in interoperation with various other systems.