1# Cloud Spanner Executor test API 2 3 4Stop. This folder is likely not what you are looking for. 5 6This folder contains protocol buffer definitions for test-only API for 7Cloud Spanner clients. Unless told otherwise by a Google Cloud representative, 8do not use any of the contents of this folder. If you would like to use Cloud 9Spanner, please consult our 10[official documentation](https://cloud.google.com/spanner/docs/apis) for details 11on our APIs, or else consider one of our 12[client libraries](https://cloud.google.com/spanner/docs/reference/libraries). 13 14This API defined in this folder is unreleased and may shut off, break, or fail 15at any time for any users who are not registered as a part of a private preview 16program. 17