This directory is included in the proto import path. It contains well-known proto files not included in the protobuf compiler itself.
./google/rpc
contents were copied from https://github.com/googleapis/googleapis/tree/943102cfb5fa8811a15a4c21bd12421aadb423b5/google/rpc
./google/type
contents were copied from https://github.com/googleapis/googleapis/tree/943102cfb5fa8811a15a4c21bd12421aadb423b5/google/type