How to use the gcsfs.gcsfuse.SmallChunkCacher function in gcsfs

def __init__(self, path='.', gcs=None, nfiles=10, **fsargs):
        if gcs is None:
            # minimum block size: still read on 5MB boundaries.
            self.gcs = GCSFileSystem(block_size=30 * 2 ** 20,
                                     cache_timeout=6000, **fsargs)
        else:
            self.gcs = gcs
        self.cache = SmallChunkCacher(self.gcs, nfiles=nfiles)
        self.write_cache = {}
        self.counter = 0
        self.root = path