Function normalize_user_geo 

pub fn normalize_user_geo(
    attributes: &mut Annotated<Attributes>,
    info: impl FnOnce(IpAddr) -> Option<Geo>,
)

Normalizes the user’s geographical information into Attributes.

Does not modify the attributes if there is already user geo information present, to preserve original values.

This uses the CLIENT__ADDRESS attribute to infer the client IP address, you may want to run normalize_client_address before normalize_user_geo.