# Types

Type Name | Description
--- | ---
ArborEvent | Persistent callbacks that can also set arguments in ArborEditor
ArborEventUtility | ArborEvent utility class
ParameterList | Parameter list that supports data flow.
PersistentCall | A class that makes persistent member calls by Reflection. Since it is for Arbor internal processing, if you want to call a member, use the built-in behavior such as ArborEvent class and InvokeMethod.
PersistentGetValue | A class to get the value of a persistent member by Reflection. Since it is for Arbor internal processing, if you want to get the member value, use the built-in behavior such as GetValueCalculator.