Enum om\ICal\Timezone\TimezoneSource

`implements`	`UnitEnum`

Where a timezone came from.

Located at ICal/Timezone/TimezoneSource.php

Cases
`VTimezone` a VTIMEZONE definition of the calendar a VTIMEZONE definition of the calendar	#
`Iana` an IANA timezone name an IANA timezone name	#
`Alias` a Windows name or a prefixed IANA name (e.g. /mozilla.org/20070129_1/Europe/Paris) a Windows name or a prefixed IANA name (e.g. /mozilla.org/20070129_1/Europe/Paris)	#
`Fallback` the configured fallback timezone the configured fallback timezone	#