Posted when a user is added to an account's friends list. The notification object is the LJFriend instance being added.
Posted when the properties of an LJFriend object have changed. The notification object is the LJFriend instance which changed. If a friend is added or removed but its properties have not changed this notification will not be posted.
Posted when an account is added to another user's friend list. The notification object is the LJFriend instance which added this account as a friend.
Posted when an account is removed from another user's friend list. The notification object is the LJFriend instance which "unfriended" this account.
Posted when a user is removed from an account's friends list. The notification object is the LJFriend instance being removed.
(Last Updated 2/17/2003)