Sets the update interval for heartbeat messages that are sent automatically
Parameters
interval: number = defaultHeartbeatInterval
New interval to be used (in milliseconds) Values between (including) 0 and 20000 are allowed only (due to ETSI spcification requirements)! If value 0 is specified, automatic heartbeats will be disabled. If no value is specified, a default interval of 15000 milliseconds will be applied.
Sets the update interval for heartbeat messages that are sent automatically