AsyncBlock start(String name, {arguments})

Start a block in this task named name. Optionally takes a Map of arguments. Returns an AsyncBlock which is used to finish this block.

Source

AsyncBlock start(String name, {Map arguments}) {
  if (name is! String) {
    throw new ArgumentError.value(name,
                                  'name',
                                  'Must be a String');
  }
  var block = new AsyncBlock._(name, _taskId, category);
  if (arguments is Map) {
    block.arguments.addAll(arguments);
  }
  /// Emit start event.
  block._start();
  return block;
}