pub const OPEN_TELEMETRY_CONTEXT: &'static str;Expand description
Metadata key carrying the serialized OpenTelemetry propagation context, so a
trace can be continued across a dora message hop. Read via
Metadata::open_telemetry_context; stamped by the node and runtime send
paths when tracing is enabled. Keep this the single source of truth so the
write and read sides can never drift.