Create a transition from Unity 5 state machine Entry node via c#

Unity Engine
1

I have been building some complex state machines from c# with great success but cannot seem to create transitions from the Entry node to a state using code. I can do this manually but that won’t work for our project. How do I create the nodes circled in the image using C#? I created these manually…
3160203--240424--EntryTransitions.jpg

I have tried AddStateMachineTransition and also AddEntryTransition but they don’t add a transition inside a state machine from the Entry node to one of the states as shown here.

Thanks for any help…

2

AddEntryTransition works for me:

using UnityEditor;
using UnityEditor.Animations;
using UnityEngine;

public class SM : MonoBehaviour
{
    [MenuItem("MyMenu/Create Controller")]
    static void CreateController()
    {
        // Creates the controller
        var controller = AnimatorController
            .CreateAnimatorControllerAtPath("Assets/Mecanim/StateMachineTransitions.controller");

        var rootStateMachine = controller.layers[0].stateMachine;
        var stateA1 = rootStateMachine.AddState("A1");
        var stateB1 = rootStateMachine.AddState("B1");
        stateA1.AddExitTransition();
        rootStateMachine.AddAnyStateTransition(stateA1);
        rootStateMachine.AddEntryTransition(stateB1);
        rootStateMachine.defaultState = stateA1;
    }
}

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