LIBCLOUD GCENodeDriver's KIND_METHOD_MAP missing compute#healthCheck

when using

gce.ex_list_targethttpproxies()
gce.ex_list_targethttpsproxies()

gce.ex_list_urlmaps()

gce.ex_list_backendservices()

gce.ex_list_forwarding_rules(global_rules=True)

from https://libcloud.readthedocs.io/en/latest/_modules/libcloud/compute/drivers/gce.html

results in 

line 7507, in _get_object_by_kind
return GCENodeDriver.KIND_METHOD_MAP[response['kind']](self, response)
KeyError: u'compute#healthCheck'