anchor.diff:           heartbeat_sock :: any(),
            org_name :: binary(),
            heartbeat_interval :: integer(),
  +         heartbeat_timestamp :: integer(),
            sequence :: integer(),
            server_public_key :: rsa_public_key(),
            session_key :: binary(),
  
positive.code: -include_lib("pushy_common/include/pushy_metrics.hrl").
  -include_lib("public_key/include/public_key.hrl").
  
  
  %% ------------------------------------------------------------------
  %% API Function Exports
  
negative.code: send_heartbeat(#state{command_sock = Sock,
                        org_name = OrgName,
                        sequence = Sequence,
                        heartbeat_timestamp = LastTimestamp,
                        session_key = SessionKey,
                        session_method = SessionMethod,
                        incarnation_id = IncarnationId,
  