throttle_url = '/{0}eventListener/v{1}/clientThrottlingState'.\
format(vel_path, api_version)
batch_url = '/{0}eventListener/v{1}/eventBatch'.\
throttle_url = '/{0}eventListener/v{1}/clientThrottlingState'.\
format(vel_path, api_version)
batch_url = '/{0}eventListener/v{1}/eventBatch'.\