Another action available on
onStart(). This is called before
Flow starts emitting objects. You are passed a
which is the same object that is passed into the lambda expression
FlowCollector has the
emit() function, and
onStart() code emits is emitted by the
any of the "real" entries.
So, in this case, in addition to ten random numbers from 0-100, we start
Flow with 1337.