def _get_level_positions(self, irrad, level):
    p = self.get_level_path(irrad, level)
    obj = dvc_load(p)
    if isinstance(obj, list):
        positions = obj
    else:
        positions = obj.get('positions', [])
    return positions
def _get_level_positions(self, irrad, level):
    p = self.get_level_path(irrad, level)
    obj = dvc_load(p)
    if isinstance(obj, list):
        positions = obj
    else:
        positions = obj.get('positions', [])
    return positions