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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:
 def from_message(cls, message):
 """ Create a public blob from a network `.Message`. Specifically, a cert-bearing pubkey auth packet, because by definition OpenSSH-style certificates 'are' their own network representation." """

        type_ = message.get_text()
        return cls(type_=type_, blob=message.asbytes())