@property<EOL><INDENT>def service_duration(self):<DEDENT>
return self._service_duration<EOL>
Gets the service_duration of this CatalogItemVariation.
If the [CatalogItem](#type-catalogitem) that owns this item variation is of type `APPOINTMENTS_SERVICE`, then this is the duration of the service in milliseconds. For example, a 30 minute appointment would have the value `1800000`, which is equal to 30 (minutes) * 60 (seconds per minute) * 1000 (milliseconds per second).

:return: The service_duration of this CatalogItemVariation.
:rtype: int