1. Duration?duration,
2. EnginePhasenewPhase =EnginePhase.sendSemanticsUpdate

Triggers a frame sequence (build/layout/paint/etc),then flushes microtasks.

If duration is set, then advances the clock by that much first.Doing this flushes microtasks.

The supplied EnginePhase is the final phase reached during the pump pass;if not supplied, the whole pass is executed.

See alsoLiveTestWidgetsFlutterBindingFramePolicy, which affects howthis method works when the test is run withflutter run.

Implementation

Future<void> pump([Duration? duration, EnginePhase newPhase = EnginePhase.sendSemanticsUpdate]);