Imports github.com/dimfeld/httptreemux/v5 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp go.opentelemetry.io/otel/attribute go.opentelemetry.io/otel/codes go.opentelemetry.io/otel/metric go.opentelemetry.io/otel/semconv/v1.12.0 go.opentelemetry.io/otel/trace Standard library imports fmt net/http