how to set ValueInput<Transform>("transform") default value

Hello, the example from official docs is
myValueA = ValueInput(“myValueA”, "Hello ");
myValueB = ValueInput(“myValueB”, String.Empty);

How to set the default value for transfrom in order to show “This” as default input value in graph?

thks!

There are several examples in the base Unit that do this (Graphs/Graph Nodes/HasGraph see in your Visual Scripting package …\Library\PackageCache\com.unity.visualscripting@1.8.0\Runtime\VisualScripting.Flow\Framework\Graph\HasGraph.cs)

[DoNotSerialize]
[PortLabelHidden]
[NullMeansSelf]
public ValueInput tranform { get; protected set; }

protected override void Definition()
{
    tranform = ValueInput<Transform>(nameof(tranform), null).NullMeansSelf();
    //....
}