def get(self, filepath):
        """Get values according to the filepath.

        Args:
            filepath (str | obj:`Path`): Here, filepath is the lmdb key.
        """
        filepath = str(filepath)
        with self._client.begin(write=False) as txn:
            value_buf = txn.get(filepath.encode('ascii'))
        return value_buf
Get values according to the filepath.

        Args:
            filepath (str | obj:`Path`): Here, filepath is the lmdb key.
        
ControlNet-v1-1-nightly/annotator/uniformer/mmcv/fileio/file_client.py