addNode method

void addNode(
  1. String name, {
  2. Map<String, String>? properties,
})

Implementation

void addNode(String name, {Map<String, String>? properties}) {
  if (nodeExists(name)) {
    throw ArgumentError.value(
        name, 'name', 'Cannot have more than one node with name `$name`.');
  }
  _items.add(_Node(name, properties));
}