code: def add_security_group(self, name, isc_id, comment=None):
          
          return SecurityGroup.create(
              name=name,
              isc_id=isc_id,
              vss_container=self,
              comment=comment)
docs: Create a new security group.
  
          :param str name: NSX security group name
          :param str isc_id: NSX Security Group objectId
              i.e. (securitygroup-14)
          :raises CreateElementFailed: failed to create
          :rtype: SecurityGroup