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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 delete_attachment(cls, session, attachment):
 """Delete an attachment. Args: session (requests.sessions.Session):
 Authenticated session. attachment (helpscout.models.Attachment):
 The attachment to be deleted. Returns: NoneType: Nothing. """

        return super(Conversations, cls).delete(
            session,
            attachment,
            endpoint_override='/attachments/%s.json' % attachment.id,
            out_type=Attachment,
        )