-record(negotiated_state, {
    adapter :: lightspeed@transport@matrix:adapter_state(),
    profile :: lightspeed@transport@matrix:profile(),
    policy :: lightspeed@transport@progressive_enhancement:negotiation_policy(),
    last_client_sequence :: integer(),
    transitions_rev :: list(binary()),
    proxy_assessment :: lightspeed@transport@progressive_enhancement:proxy_assessment()
}).