def METHOD_NAME():
    msg = '\nFail: {0}, Success: {1}'.format(
        failure_counter, success_counter)
    if len(results) > 0:
        first = results[0]
        errs = first.failures + first.errors
        if len(errs) > 0:
            err_msg = '\n'.join(METHOD_NAME[1] for METHOD_NAME in errs)
            msg += '\n\nThe first error message:\n' + err_msg
    instance.METHOD_NAME(msg)