Write docs for owner API module

src/ifcopenshell-python/ifcopenshell/api/owner/edit_person.py

@@ -18,11 +18,28 @@
 
 
 class Usecase:
-    def __init__(self, file, **settings):
+    def __init__(self, file, person=None, attributes=None):
+        """Edits the attributes of an IfcPerson
+
+        For more information about the attributes and data types of an
+        IfcPerson, consult the IFC documentation.
+
+        :param person: The IfcPerson entity you want to edit
+        :type person: ifcopenshell.entity_instance.entity_instance
+        :param attributes: a dictionary of attribute names and values.
+        :type attributes: dict, optional
+        :return: None
+        :rtype: None
+
+        Example::
+
+            person = ifcopenshell.api.run("owner.add_person", model,
+                identification="bobthebuilder", family_name="Thebuilder", given_name="Bob")
+            ifcopenshell.api.run("owner.edit_person", model, person=person,
+                attributes={"MiddleNames": ["The"], "FamilyName": "Builder"})
+        """
         self.file = file
-        self.settings = {"person": None, "attributes": {}}
-        for key, value in settings.items():
-            self.settings[key] = value
+        self.settings = {"person": person, "attributes": attributes or {}}
 
     def execute(self):
         for name, value in self.settings["attributes"].items():