Check design mode before calling MVVM light Distpatcher helper

DesignAwareDispatcherHelper

using System;
using GalaSoft.MvvmLight;
using GalaSoft.MvvmLight.Threading;

namespace MvvmLight.Helpers
{
    public class DesignAwareDispatcherHelper
    {
        // ReSharper disable once InconsistentNaming
        public static void CheckDesignModeInvokeOnUI(Action action)
        {
            if (action == null)
            {
                return;
            }
            if (ViewModelBase.IsInDesignModeStatic)
            {
                action();
            }
            else
            {
                DispatcherHelper.CheckBeginInvokeOnUI(action);
            }
        }
    }
}