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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 read(self, fd):
 """ Read a block from the given file descriptor :param fd: file descriptor :return: bytes """

        args = {
            'fd': fd,
        }

        data = self._client.json('filesystem.read', args)
        return base64.decodebytes(data.encode())