- // Tests if a friendship exists between two users.
- //
- //
- // URL: http://twitter.com/friendships/exists.format
- //
- // Formats: xml, json, none
- //
- // Parameters:
- //
- // * user_a. Required. The ID or screen_name of the first user to test friendship for.
- // * user_b. Required. The ID or screen_name of the second user to test friendship for.
- // * Ex: http://twitter.com/friendships/exists.xml?user_a=alice&user_b=bob
-