RingLogger.Client.start_link

You're seeing just the function start_link, go back to RingLogger.Client module for more information.
Link to this function

start_link(config \\ [])

View Source

Specs

start_link(keyword()) :: GenServer.on_start()

Start up a client GenServer. Except for just getting the contents of the ring buffer, you'll need to create one of these. See configure/2 for information on options.