typing

src/blenderbim/blenderbim/bim/import_ifc.py

@@ -1703,18 +1703,18 @@ class IfcImporter:
                 self.type_collection.children.link(aggregate["collection"])
                 continue
 
-    def create_materials(self):
+    def create_materials(self) -> None:
         for material in self.file.by_type("IfcMaterial"):
             self.create_material(material)
 
-    def create_material(self, material):
+    def create_material(self, material: ifcopenshell.entity_instance) -> bpy.types.Material:
         blender_material = bpy.data.materials.new(material.Name)
         self.link_element(material, blender_material)
         self.material_creator.materials[material.id()] = blender_material
         blender_material.use_fake_user = True
         return blender_material
 
-    def create_styles(self):
+    def create_styles(self) -> None:
         parsed_styles = set()
 
         for material_definition_representation in self.file.by_type("IfcMaterialDefinitionRepresentation"):

src/blenderbim/blenderbim/bim/module/geometry/operator.py

@@ -40,6 +40,7 @@ from mathutils import Vector, Matrix
 from time import time
 from blenderbim.bim.ifc import IfcStore
 from ifcopenshell.util.shape_builder import ShapeBuilder
+from typing import Any
 
 
 class Operator:
@@ -729,7 +730,7 @@ class OverrideOutlinerDelete(bpy.types.Operator):
             IfcStore.add_transaction_operation(self)
         return {"FINISHED"}
 
-    def get_collection_objects_and_children(self, collection):
+    def get_collection_objects_and_children(self, collection: bpy.types.Collection) -> dict[str, Any]:
         objects = set()
         children = set()
         queue = [collection]

src/blenderbim/blenderbim/tool/blender.py

@@ -21,6 +21,7 @@ import bmesh
 import json
 import ifcopenshell.api
 import ifcopenshell.util.element
+import blenderbim.core.tool
 import blenderbim.tool as tool
 import blenderbim.bim
 import addon_utils