Imports google.golang.org/grpc/codes google.golang.org/grpc/status github.com/golang/protobuf/ptypes/timestamp github.com/apache/beam/sdks/go/pkg/beam/model/pipeline_v1 google.golang.org/grpc github.com/golang/protobuf/proto github.com/golang/protobuf/ptypes/struct Standard library imports context fmt math