All triggers (i.e. [`EventTriggerBehavior`](https://github.com/microsoft/XamlBehaviors/blob/main/src/BehaviorsSDKManaged/Microsoft.Xaml.Interactivity.Shared/Core/EventTriggerBehavior.cs)) and actions (i.e. [`ChangePropertyAction`](https://github.com/microsoft/XamlBehaviors/blob/a98c24a6a7d9bdd57cf5d406455b6f623e321a72/src/BehaviorsSDKManaged/Microsoft.Xaml.Interactivity.Shared/Core/ChangePropertyAction.cs)) are `sealed`. Please open it up for extensibility and flexibility.
All triggers (i.e.
EventTriggerBehavior) and actions (i.e.ChangePropertyAction) aresealed. Please open it up for extensibility and flexibility.