Amqpx.Confirm.unregister_flow_handler

You're seeing just the function unregister_flow_handler, go back to Amqpx.Confirm module for more information.
Link to this function

unregister_flow_handler(channel)

Specs

unregister_flow_handler(Amqpx.Channel.t()) :: :ok

This removes the flow handler, if it exists. Does nothing if there is no such handler.