fix bug in model transformation

Author: tomvanmele

CHANGELOG.md

@@ -11,6 +11,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+* Fixed bug in `compas_model.models.Model.transformation`.
+
 ### Removed
 
 

src/compas_model/models/model.py

@@ -163,7 +163,7 @@ def kdtree(self) -> KDTree:
 
     @property
     def transformation(self) -> Transformation:
-        return self._frame
+        return self._transformation
 
     @transformation.setter
     def transformation(self, transformation: Transformation) -> None: