godot/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators.Tests/TestData/Sources/AllReadOnly.cs

using Godot;

public partial class AllReadOnly : GodotObject
{
    public readonly string readonly_field = "foo";
    public string readonly_auto_property { get; } = "foo";
    public string readonly_property { get => "foo"; }
    public string initonly_auto_property { get; init; }
}