def make_properties_node(self) -> ET.Element | None:
        """Return a Junit node containing custom properties, if any."""
        if self.properties:
            properties = ET.Element("properties")
            for name, value in self.properties:
                properties.append(ET.Element("property", name=name, value=value))
            return properties
        return None
Return a Junit node containing custom properties, if any.
src/_pytest/junitxml.py