+ '''Run a scenario for a certain amount of time
+
+If the scenario ends before the time has elapsed, it will be started again.
+
+ Parameters
+ duration - amount of time the scenario will be run for
+ type: int
+ unit: seconds
+ default: 1 sec
+ interval - time to wait between each scenario invocation
+ type: int
+ unit: seconds
+ default: 1 sec
+ '''