typing

src/ifcopenshell-python/ifcopenshell/api/layer/add_layer.py

@@ -15,9 +15,11 @@
 #
 # You should have received a copy of the GNU Lesser General Public License
 # along with IfcOpenShell.  If not, see <http://www.gnu.org/licenses/>.
+import ifcopenshell
+from typing import Optional
 
 
-def add_layer(file, Name=None) -> None:
+def add_layer(file: ifcopenshell.file, Name: Optional[str] = None) -> ifcopenshell.entity_instance:
     """Adds a new layer
 
     An IFC layer is like a CAD layer. Portions of an object's geometry
@@ -41,6 +43,4 @@ def add_layer(file, Name=None) -> None:
 
         ifcopenshell.api.run("layer.add_layer", model, Name="AI-WALL-FULL-DIMS-N")
     """
-    settings = {"Name": Name or "Unnamed"}
-
-    return file.create_entity("IfcPresentationLayerAssignment", Name=settings["Name"])
+    return file.create_entity("IfcPresentationLayerAssignment", Name=Name)