'Retrieve the correct API path based on API availability
:param path_key: The volume API to request (volume or volumes)
:raise KeyError: If the path_key is not valid'

def _get_volume_api_path(self, path_key):

    if self.features.SSC_API_V2:
        path_key = ('ssc_' + path_key)
    return self.RESOURCE_PATHS[path_key]
