Requiem.QUIC.NIF.config_set_application_protos

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

config_set_application_protos(ptr, protos)

Specs

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