Requiem.QUIC.NIF.packet_builder_build_negotiate_version

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

packet_builder_build_negotiate_version(builder, scid, dcid)

Specs

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