namespace Mercury.Game;

public class RocketBuilder
{
    public void Build(string name)
    {
    }

    public class NestedThing
    {
        public int Build(int value)
        {
            return value + 1;
        }
    }
}

public record BuildPlan(string Name);

public static class BuildPlanFactory
{
    public static void BuildRocket(string name)
    {
        var builder = new RocketBuilder();
        builder.Build(name);
        _ = new RocketBuilder.NestedThing().Build(1);
    }
}