/**
 * TpConnectionContactsByIdCb:
 * @connection: The connection
 * @n_contacts: The number of TpContact objects successfully created
 *  (one per valid ID), or 0 on unrecoverable errors
 * @contacts: (array length=n_contacts): An array of @n_contacts TpContact
 *  objects (this callback is
 *  not given a reference to any of these objects, and must call
 *  g_object_ref() on any that it will keep), or %NULL on unrecoverable errors
 * @requested_ids: (array length=n_contacts): An array of @n_contacts valid IDs
 *  (JIDs, SIP URIs etc.)
 *  that were passed to tp_connection_get_contacts_by_id(), in an order
 *  corresponding to @contacts, or %NULL on unrecoverable errors
 * @failed_id_errors: (element-type utf8 GLib.Error): A hash table in which
 *  the keys are IDs and the values are errors (#GError)
 * @error: %NULL on success, or an unrecoverable error that caused everything
 *  to fail
 * @user_data: the @user_data that was passed to
 *  tp_connection_get_contacts_by_id()
 * @weak_object: the @weak_object that was passed to
 *  tp_connection_get_contacts_by_id()
 */

/**
 * tp_connection_get_contacts_by_id:
 * @self: A connection, which must be ready (#TpConnection:connection-ready
 *  must be %TRUE)
 * @n_ids: The number of IDs in @ids (must be at least 1)
 * @ids: (array length=n_ids) (transfer none): An array of strings representing
 *  the desired contacts by their
 *  identifiers in the IM protocol (XMPP JIDs, SIP URIs, MSN Passports,
 *  AOL screen-names etc.)
 * @n_features: The number of features in @features (may be 0)
 * @features: (array length=n_features): An array of features that must be
 *  ready for use (if supported)
 *  before the callback is called (may be %NULL if @n_features is 0)
 * @callback: A user callback to call when the contacts are ready
 * @user_data: Data to pass to the callback
 * @destroy: Called to destroy @user_data either after @callback has been
 *  called, or if the operation is cancelled
 * @weak_object: (allow-none) (transfer none): An object to pass to the
 *  callback, which will be weakly
 *  referenced; if this object is destroyed, the operation will be cancelled
 */

                        conn.get_contacts_by_id(
                          [ "dannielle.meyer@gmail.com" ],
                          [],
                          function(conn, contacts, requested, failed, error,
                                   user_data, weak_obj)
                            {
                              print("Callback");
                            },
                          null, null, null);