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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 async def server_stop(app, loop):
 """Sends a message to the webhook channel when server stops."""

    em = Embed(color=0xe67e22)
    em.set_footer('Host: {}'.format(socket.gethostname()))
    em.description = '[INFO] Server Stopped'

    await app.webhook.send(embed=em)
    await app.session.close()