diff --git a/src/ifcopenshell-python/ifcopenshell/api/project/create_file.py b/src/ifcopenshell-python/ifcopenshell/api/project/create_file.py
index a353db9d51..bc0bb23ef5 100644
--- a/src/ifcopenshell-python/ifcopenshell/api/project/create_file.py
+++ b/src/ifcopenshell-python/ifcopenshell/api/project/create_file.py
@@ -3,12 +3,17 @@ import ifcopenshell
 
 
 class Usecase:
-    def __init__(self, **settings):
-        self.settings = {"version": "IFC4"}
-        for key, value in settings.items():
-            self.settings[key] = value
+    def __init__(self, foobar: ifcopenshell.entity_instance, version: str = "IFC4", foo: str = None, bar: int = 1, baz: float = 0.5):
+        """Create File
 
-    def execute(self):
+        Create a new IFC file object
+
+        :param version: The schema version of the IFC file. Choose from "IFC2X3" or "IFC4".
+        :return: file: The created IFC file object.
+        """
+        self.settings = {"version": version}
+
+    def execute(self) -> ifcopenshell.file:
         self.file = ifcopenshell.file(schema=self.settings["version"])
         # TODO: add all metadata, pending bug #747
         self.file.wrapped_data.header.file_name.name = "/dev/null"  # Hehehe
@@ -22,5 +27,5 @@ class Usecase:
         self.file.wrapped_data.header.file_name.preprocessor_version = "IfcOpenShell {}".format(ifcopenshell.version)
         self.file.wrapped_data.header.file_name.originating_system = "IfcOpenShell {}".format(ifcopenshell.version)
         self.file.wrapped_data.header.file_name.authorization = "Nobody"
-        self.file.wrapped_data.header.file_description.description = ('ViewDefinition[DesignTransferView]',)
+        self.file.wrapped_data.header.file_description.description = ("ViewDefinition[DesignTransferView]",)
         return self.file