numRepetitions
The number of times to repeat the session.
simulatedClientNum
The simulated client number (ordinal 1) used to distinguish this simulated client from other simulated clients in the
same mlreplay instance.
numSimulatedClients
The total number of simulated clients in this mlreplay instance.
namesAndValues
The set of defined names and values used to customize replay behavior.
This callback can be called concurrently. If false is returned for repetition X, then the repetition is skipped. This callback is called once per repetition per simulated client per mlreplay instance.