This class is designed to work with host groups.
Object references:
Available methods:
hostgroup.create - creating new host groupshostgroup.delete - deleting host groupshostgroup.get - retrieving host groupshostgroup.massadd - adding related objects to host groupshostgroup.massremove - removing related objects from host groupshostgroup.massupdate - replacing or removing related objects from host groupshostgroup.update - updating host groups