def get_file(self, fp, headers=None, cb=None, num_cb=10, torrent=False):
        """
        Retrieves a file from a Key

        :type fp: file
        :param fp: File pointer to put the data into

        :type headers: string
        :param: ignored in this subclass.

        :type cb: function
        :param cb: ignored in this subclass.

        :type cb: int
        :param num_cb: ignored in this subclass.
        """
        if self.key_type & self.KEY_STREAM_READABLE:
            raise BotoClientError('Stream is not Readable')
        elif self.key_type & self.KEY_STREAM_WRITABLE:
            key_file = self.fp
        else:
            key_file = open(self.full_path, 'rb')
        try:
            shutil.copyfileobj(key_file, fp)
        finally:
            key_file.close()
Retrieves a file from a Key

        :type fp: file
        :param fp: File pointer to put the data into

        :type headers: string
        :param: ignored in this subclass.

        :type cb: function
        :param cb: ignored in this subclass.

        :type cb: int
        :param num_cb: ignored in this subclass.