[Python] The fragments for ORC dataset return base Fragment instead of FileFragment

import pyarrow as pa
import pyarrow.dataset as ds
from pyarrow import orc

table = pa.table({'a': [1, 2, 3]})
orc.write_table(table, "test.orc")
dataset = ds.dataset("test.orc", format="orc")
fragment = list(dataset.get_fragments())[0]

In [9]: fragment
Out[9]: <pyarrow._dataset.Fragment at 0x7f97b159beb0>

In [10]: fragment.path
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-10-6477cc57f0cc> in <module>
----> 1 fragment.path

AttributeError: 'pyarrow._dataset.Fragment' object has no attribute 'path'