Hi ovirt expertise

i am new to ovirt, i now start install and play around.

i unable find any doc from web site to create vm from snapshot via ovirt-shell (ovirt 4.0) , any help on this.
i mange to create vm from snapshot via webui

i would like to perform backup vm via api by using ovirt-shell. i have totally no knowledge on python

ideal as below:

create snapshot
#add snapshot --parent-vm-name "rhel6.8_server02" --description 'my snapshot'

create vm from snapshot
## missing, need help
del snapshot
# remove snapshot "597e550e-1285-46a0-86a3-6170791bc72d" --parent-vm-name "rhel6.8_server02"
export vm to export domain
## missing , need help
del vm
# remove vm --parent-vm-name "rhel6.8_server02-snapshot"





regards

csyeow