Little script to open an additional Animator window in Unity

OpenAdditionalAnimatorWindow.cs

using UnityEditor;
using UnityEngine;


namespace Framework.Core.EditorExtension
{
    public class OpenAdditionalAnimatorWindow : MonoBehaviour
    {
        static EditorWindow window = null;


        [MenuItem("Tools/Animations/Open Additional Animator Window &%a", false)]
        static void CreateAdditionalAnimatorWindow()
        {
            if (window == null)
            {
                // Open additional animator window
                window = (ScriptableObject.CreateInstance(GetAnimatorWindowType()) as EditorWindow);
                window.Show();
            }
            else
            {
                // Close additional animator window
                window.Close();
                DestroyImmediate(window);
                window = null;
            }
        }

        private static System.Type GetAnimatorWindowType()
        {
            return (typeof(UnityEditor.Graphs.AnimationCurveTypeConverter).Assembly.GetType("UnityEditor.Graphs.AnimatorControllerTool"));
        }
    }
}