"authorize-id" => {
                "type" => STRING,
                "description" => "The SASL authorization ID.  Used as authentication user name to use if no authentication CallbackHandler is specifiedand the se
lected SASL mechanism demands a user name.",
....
"heartbeat-interval" => {
                "type" => INT,
                "description" => "The interval to use for connection heartbeat, in milliseconds.  If the connection is idle in the outbound directionfor this amount of time, a ping message will be sent, which will trigger a corresponding reply message.",
                "expressions-allowed" => true,