updated auth token handling using new users api.

mdrsclient/api/utils.py

@@ -1,4 +1,4 @@
-from mdrsclient.api.user import UserApi
+from mdrsclient.api.users import UsersApi
 from mdrsclient.connection import MDRSConnection
 from mdrsclient.exceptions import UnauthorizedException
 
@@ -8,9 +8,9 @@ def token_check(connection: MDRSConnection) -> None:
         connection.lock.acquire()
         if connection.token is not None:
             if connection.token.is_refresh_required:
-                user_api = UserApi(connection)
+                user_api = UsersApi(connection)
                 try:
-                    connection.token = user_api.refresh(connection.token)
+                    connection.token = user_api.tokenRefresh(connection.token)
                 except UnauthorizedException:
                     connection.logout()
             elif connection.token.is_expired: