# IActionRegistration

Interface in [Yarn.Unity](https://docs.yarnspinner.dev/api/csharp/yarn.unity)

## Summary

Contains methods that allow adding and removing Yarn commands and functions.

```csharp
public interface IActionRegistration
```

## Methods

| Name                                                                                                                                                                                              | Description                                                                          |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------ |
| [AddCommandHandler(string,Delegate)](https://docs.yarnspinner.dev/api/csharp/yarn.unity/yarn.unity.iactionregistration/yarn.unity.iactionregistration.addcommandhandler-1)                        | Adds a command handler. Dialogue will pause execution after the command is called.   |
| [AddCommandHandler(string,MethodInfo)](https://docs.yarnspinner.dev/api/csharp/yarn.unity/yarn.unity.iactionregistration/yarn.unity.iactionregistration.addcommandhandler-2)                      | Adds a command handler. Dialogue will pause execution after the command is called.   |
| [AddFunction(string,Delegate)](https://docs.yarnspinner.dev/api/csharp/yarn.unity/yarn.unity.iactionregistration/yarn.unity.iactionregistration.addfunction)                                      | Add a new function that returns a value, so that it can be called from Yarn scripts. |
| [RegisterFunctionDeclaration(string,Type,Type\[\])](https://docs.yarnspinner.dev/api/csharp/yarn.unity/yarn.unity.iactionregistration/yarn.unity.iactionregistration.registerfunctiondeclaration) | Registers a function as existing, without supplying an implementation.               |
| [RemoveCommandHandler(string)](https://docs.yarnspinner.dev/api/csharp/yarn.unity/yarn.unity.iactionregistration/yarn.unity.iactionregistration.removecommandhandler)                             | Removes a command handler.                                                           |
| [RemoveFunction(string)](https://docs.yarnspinner.dev/api/csharp/yarn.unity/yarn.unity.iactionregistration/yarn.unity.iactionregistration.removefunction)                                         | Remove a registered function.                                                        |