def METHOD_NAME(environ, start_response):
    status = '200 OK'
    response_headers = [('Content-type', 'text/plain')]
    start_response(status, response_headers)
    output = ['Hello, world!\n',
              'This is a wsgi app running within CherryPy!\n\n']
    keys = list(environ.keys())
    keys.sort()
    for k in keys:
        output.append('%s: %s\n' % (k, environ[k]))
    return [ntob(x, 'utf-8') for x in output]