def experimental_otel_exporter(
        self,
    ) -> Optional[SpanExporter]:
        """EXPERIMENTAL(otel_tracing): OpenTelemetry SpanExporter to send spans
        to.

        Only works if the trulens.core.experimental.Feature.OTEL_TRACING flag is
        set. The setter will set and lock the flag as enabled.
        """

        return self._experimental_otel_exporter
EXPERIMENTAL(otel_tracing): OpenTelemetry SpanExporter to send spans
        to.

        Only works if the trulens.core.experimental.Feature.OTEL_TRACING flag is
        set. The setter will set and lock the flag as enabled.
        
src/core/trulens/core/session.py