code: def get_success_enrollment_message(cls, users, enrolled_in):
          
          enrolled_count = len(users)
          return (
              'success',
              ungettext(
                  '{enrolled_count} learner was enrolled in {enrolled_in}.',
                  '{enrolled_count} learners were enrolled in {enrolled_in}.',
                  enrolled_count,
              ).format(
                  enrolled_count=enrolled_count,
                  enrolled_in=enrolled_in,
              )
          )
docs: Create message for the users who were enrolled in a course or program.
  
          Args:
              users: An iterable of users who were successfully enrolled
              enrolled_in (str): A string identifier for the course or program the users were enrolled in
  
          Returns:
              tuple: A 2-tuple containing a message type and message text