My scratchpad for messing with Google Contacts.

• URL => "https://google.com/m8/carddav/principals/__uids__/{user}/lists/default/"
• {user} => E.g. 'user@gmail.com'
• {user} can be 'default' to refer to the currently authenticated user
• "PROPFIND https://google.com/m8/carddav/principals/__uids__/{user}/lists/" seems to return the same info as if the 'default/' was at the end.
• Technically you can use "PROPFIND https://google.com/m8/carddav", which will list the url paths under it.
• If you know the UID of the contact, you can fetch that contact via "BASE_URL/{user}/lists/default/{UID}" even if it's not in "My Contacts"
• Looks like only contacts in "My Contacts" will be listed via CardDAV
• Looks like using REPORT and an address book query returns 404