object hostgroup.update(object/array hostGroups)
This method allows to update existing hosts groups.
(object/array) Host group properties to be updated.
groupid property must be defined for each host group, all other properties are optional. Only the given properties will be updated, all others will remain unchanged.
(object) Returns an object containing the IDs of the updated host groups under the
Rename a host group to "Linux hosts."
CHostGroup::update() in frontends/php/include/classes/api/services/CHostGroup.php.