Hi Fambo,
Thanks for reaching out to NetApp.
We do have an API igroup-get-iter which provides the information about the igroup. Kindly refer to this link for more details.
The available API's are
igroup-add
igroup-bind-portset
igroup-create
igroup-destroy
igroup-get-iter
igroup-lookup-lun
igroup-remove
igroup-rename
igroup-set-attribute
igroup-unbind-portset