C#: Add change note.

michaelnebel · michaelnebel · commit bdc00841c05e · 2024-09-16T15:45:14.000+02:00
diff --git a/csharp/ql/lib/change-notes/2024-09-16-accessor-mad.md b/csharp/ql/lib/change-notes/2024-09-16-accessor-mad.md
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+---
+category: breaking
+---
+* C#: Add support for MaD directly on properties and indexers using *attributes*. Using `Attribute.Getter` or `Attribute.Setter` in the model `ext` field applies the model to the getter or setter for properties and indexers. Prior to this change `Attribute` models unintentionally worked for property setters (if the property is decorated with the matching attribute). That is, a model that uses the `Attribute` feature directly on a property for a property setter needs to be changed to `Attribute.Setter`.

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 +---
 +category: breaking
 +---
 +* C#: Add support for MaD directly on properties and indexers using *attributes*. Using `Attribute.Getter` or `Attribute.Setter` in the model `ext` field applies the model to the getter or setter for properties and indexers. Prior to this change `Attribute` models unintentionally worked for property setters (if the property is decorated with the matching attribute). That is, a model that uses the `Attribute` feature directly on a property for a property setter needs to be changed to `Attribute.Setter`.