description

# finishSync method Null safety

void finishSync ()

Finish the last synchronous operation that was started.

## Implementation

    static void finishSync() {
      if (!_hasTimeline) {
        return;
      }
      if (_stack.length == 0) {
        throw new StateError('Uneven calls to startSync and finishSync');
      }
      // Pop top item off of stack.
      var block = _stack.removeLast();
      if (block == null) {
        // Dart stream was disabled when startSync was called.
        return;
      }
      // Finish it.
      block.finish();
    }