Imports go.opentelemetry.io/otel go.opentelemetry.io/otel/exporters/stdout/stdouttrace go.opentelemetry.io/otel/propagation go.opentelemetry.io/otel/sdk/trace go.opentelemetry.io/otel/trace Imports in module “go.opentelemetry.io/otel/example/passthrough” go.opentelemetry.io/otel/example/passthrough/handler Standard library imports context fmt log net/http time