Imports
- github.com/golang/protobuf/proto
- github.com/golang/protobuf/protoc-gen-go/descriptor
- github.com/golang/protobuf/ptypes/empty
- github.com/golang/protobuf/ptypes/struct
- github.com/golang/protobuf/ptypes/timestamp
- golang.org/x/net/context
- google.golang.org/grpc