Telemetry backend component:

scripts/run_tests_locally-telemetry-emulated.sh

src/telemetry/backend/collector_api/_Collector.py

src/telemetry/backend/collector_api/__init__.py

src/telemetry/backend/collectors/__init__.py

...elemetry/backend/collectors/emulated/EmulatedCollector.py

src/telemetry/backend/collectors/emulated/EmulatedHelper.py

.../backend/collectors/emulated/SyntheticMetricsGenerator.py

src/telemetry/backend/collectors/emulated/__init__.py

src/telemetry/backend/tests/messages_emulated.py

src/telemetry/backend/tests/test_emulated.py