description

# instant method Null safety

void instant (

1. String name,
2. {Map? arguments}

)

Emit an instant event for this task. Optionally takes a Map of `arguments`.

## Implementation

    void instant(String name, {Map? arguments}) {
      if (!_hasTimeline) return;
      // TODO: When NNBD is complete, delete the following line.
      ArgumentError.checkNotNull(name, 'name');
      Map? instantArguments;
      if (arguments != null) {
        instantArguments = new Map.from(arguments);
      }
      if (_filterKey != null) {
        instantArguments ??= {};
        instantArguments[_kFilterKey] = _filterKey;
      }
      _reportTaskEvent(
          _taskId, 'n', 'Dart', name, _argumentsAsJson(instantArguments));
    }