Running.singleStep constructor Null safety

Running.singleStep(
  1. RunningController _fake,
  2. ProgramRunner _runner,
  3. void _singleStepOnDone(
    1. CalculatorError?
    )?
)

Implementation

Running.singleStep(this._fake, this._runner, this._singleStepOnDone)
    : _stopNext = true,
      super(_fake.real) {
  assert(_fake.real.suspendedProgramRunner == null);
  _stopNext = true;
}