Feedback the bundler with the result of using the bundle with the specified size.
The feedback data consists in providing a number of tasks that were executed, and their total execution time in milliseconds.
The execution time includes the network round trip between node and server.
nbTasks - number of tasks that were executed.
totalTime - the total execution and transport time in nanoseconds.
accumulatedElapsed - the total accumalated elapsed time (in the node) in nanoseconds for the execution of the tasks.