namespace UiPath.Studio.Activities.Api
{
    /// <summary>
    /// Supported Studio feature keys.
    /// </summary>
    public static class DesignFeatureKeys
    {
        /// <summary>
        /// Studio 19.8
        /// </summary>
        public const string Settings = nameof(Settings) + "V1";

        /// <summary>
        /// Studio 19.8
        /// </summary>
        public const string Theme = nameof(Theme) + "V1";

        /// <summary>
        /// Studio 19.8
        /// </summary>
        public const string Wizards = nameof(Wizards) + "V1";

        /// <summary>
        /// Studio 19.8
        /// </summary>
        public const string AccessProvider = nameof(AccessProvider) + "V1";

        /// <summary>
        /// Studio 19.10
        /// </summary>
        public const string Telemetry = nameof(Telemetry) + "V1";
    }
}

IWorkflowDesignApi studioActivitiesApi;
            // How to check for a feature.
            if (studioActivitiesApi.HasFeature(UiPath.Studio.Activities.Api.DesignFeatureKeys.Settings))
            {
                // Call Method or lambda that is using specific feature
                // This ensures that the code is JIT compiled only after the feature check
           }

using System.Activities;
using System.Windows;
using System.Windows.Input;
using UiPath.Studio.Activities.Api;
using UiPath.Studio.Activities.Api.Wizards;

namespace MyCustomActivityPack
{
    public static class WizardCreator
    {
        public static void CreateWizards(IWorkflowDesignApi workflowDesignApi)
        {
            CreateDemoWizard(workflowDesignApi);
        }

        private static void CreateDemoWizard(IWorkflowDesignApi workflowDesignApi)
        {
            var wizardApi = workflowDesignApi.Wizards;
            var wizardDefinition = new WizardDefinition()
            {
                // You can add other definitions here to create a dropdown.
                //ChildrenDefinitions.Add()
                Wizard = new WizardBase()
                {
                    RunWizard = RunWizard
                },
                DisplayName = "DemoWizardDisplayName",
                Shortcut = new KeyGesture(Key.F9, ModifierKeys.Control | ModifierKeys.Shift),
                IconUri = "Icons/RecordIcon",
                Tooltip = "DemoWizardTooltip"
            };

            var collection = new WizardCollection(); //Use a collection to group all of your wizards.
            collection.WizardDefinitions.Add(wizardDefinition);
            wizardApi.Register(collection);
        }

        private static Activity RunWizard()
        {
            if(MessageBox.Show("Do you want a sequence?", "This is a wizard window", MessageBoxButton.YesNo, MessageBoxImage.Question) == MessageBoxResult.Yes)
            {
                return new System.Activities.Statements.Sequence()
                {
                    DisplayName = "The wizard generated this sequence"
                };
            }

            return null;
        }
    }
}