Requiem.QUIC.NIF.socket_sender_get

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

socket_sender_get(socket_ptr, idx)

Specs

socket_sender_get(integer(), non_neg_integer()) ::
  {:ok, integer()} | {:error, :system_error | :not_found}