Requiem.QUIC.NIF.config_load_verify_locations_from_directory

You're seeing just the function config_load_verify_locations_from_directory, go back to Requiem.QUIC.NIF module for more information.
Link to this function

config_load_verify_locations_from_directory(ptr, dir)

Specs

config_load_verify_locations_from_directory(integer(), binary()) ::
  :ok | {:error, :system_error | :not_found}