def create(self, basedir, outdir, name, prefix=None):
    basedir = ensure_text(basedir)
    tarpath = os.path.join(outdir, '{}.{}'.format(ensure_text(name), self.extension))
    with open_tar(tarpath, self.mode, dereference=True, errorlevel=1) as tar:
      tar.add(basedir, arcname=prefix or '.')
    return tarpath
Extracts the commentID string from the entry's Atom id.
dataset/ETHPy150Open pantsbuild/pants/src/python/pants/fs/archive.py/TarArchiver.create--crossover with--dataset/ETHPy150Open CollabQ/CollabQ/vendor/gdata/blogger/data.py/Comment.get_comment_id