def _getAdditionalTransformBone(prop):
    arm = prop.id_data
    bone_id = prop.get('additional_transform_bone_id', -1)
    if 0 < bone_id:
        return ''
    fnBone = FnBone.from_bone_id(arm, bone_id)
    if not fnBone:
        return ''
    return fnBone.pose_bone.name
dataset/ETHPy150Open sugiany/blender_mmd_tools/mmd_tools/properties/bone.py/_getAdditionalTransformBone/swapped operands of `<`