Package api defines the interaction that is done between the aditional runtime (the current running extension) and the main business logic function running along aside it.

Package telemetry defines the apis and server required to interact with the subscribe to the Telemetry API for AWS lambdas.

WithManualFlushEnabled enables a flush per invocation, it requires a flush.Coordinator to trigger the flush and will register it as a telemetry server callback.

Server is an interface to the gostatsd.Server type, the main purpose here is to allow for mocks to be used throughout testing and reduce the amount of set up code to test.