Imports github.com/gogo/protobuf/gogoproto github.com/gogo/protobuf/jsonpb github.com/gogo/protobuf/proto github.com/gogo/protobuf/types github.com/golang/protobuf/ptypes/struct github.com/golang/protobuf/ptypes/timestamp github.com/gravitational/trace Standard library imports bytes context encoding/json fmt io math math/bits time