val from_pattern : Pattern.t ‑> OF10.patternval from_action : OF10.portId option ‑> action ‑> OF10.actionval from_flow : int ‑> flow ‑> OF10.flowModval from_switch_features : switchFeatures ‑> OF10.SwitchFeatures.tval from_payload : payload ‑> OF10.payloadval from_packet_in_reason : packetInReason ‑> OF10.packetInReasonval from_packetOut : pktOut ‑> OF10.packetOutval message_from_event : event ‑> (OF10.switchId * OF10.Message.t) option