onInvoke method

@override Future<List<List<ByteData>>> onInvoke(Map params)

This is called when this node is invoked. You can return the following types from this method:

• Iterable
• Map
• Table
• Stream
• SimpleTableResult
• AsyncTableResult

You can also return a future that resolves to one (like if the method is async) of the following types:

• Stream
• Iterable
• Map
• Table

Implementation

@override
Future<List<List<ByteData>>> onInvoke(Map params) async {
  String name = params['Icon'];
  var resolver = provider._iconResolver;

  var data = await resolver!(name);

  return [
    [data],
  ];
}