how to make nas share mounted in zones persistent across reboots?

there are few nas shares that would be mounted on the local zone. should i add an entry into the add an entry in zone.xml file so that it gets mounted automatically when the zone gets rebooted? or whats the correct way to get it mounted automatically when the zone reboots

Add it to /etc/vfstab in the zone.

is there any way to add it to zone.xml file?
if an entry can be added to /etc/vfstab of the zone,then can we add all entry in the zone's /etc/vfstab itself , instead of adding it in zone.xml file ?