biped-test-vrc/Assets/hwm/Editor/HWMSetupEditor.cs

using UnityEditor;
using UnityEngine;

namespace RiggingTools.FacialAnimation
{
    [CustomEditor(typeof(HWMSetup))]
    public class HWMSetupEditor : Editor
    {
        public override void OnInspectorGUI()
        {
            DrawDefaultInspector();

            var script = (HWMSetup)target;

            if (GUILayout.Button("Generate Anim Controller"))
            {
                script.GenerateAnimationController();
            }
        }
    }
}