Imports
- go.opentelemetry.io/otel/api/key
- go.opentelemetry.io/otel/sdk/trace
- google.golang.org/grpc/codes
- go.opentelemetry.io/otel/api/trace
- go.opentelemetry.io/otel/global
- go.opentelemetry.io/otel/api/distributedcontext
- go.opentelemetry.io/otel/plugin/httptrace