Requiem.QUIC.Connection.stream_send

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

stream_send(conn, stream_id, data, fin)

Specs

stream_send(integer(), non_neg_integer(), binary(), boolean()) ::
  {:ok, non_neg_integer()} | {:error, :system_error | :already_closed}