Brawlex.open_connection

You're seeing just the function open_connection, go back to Brawlex module for more information.
Link to this function

open_connection(token_id, allow_duplicates, timeout \\ 5000)

Specs

open_connection(token(), boolean(), timeout()) :: {:ok, pid()} | {:error, any()}

Call the BrawlBrain to set up a new token_process for requests. If the token is alredy in use and allow_duplicates is false, just reference to it. Return {:ok, pid} in case of success or {:error, reason} in fail case.