def __init__(self, name, out=None, flatten_paths=None, *args, **kwargs):
    super(OverlayViewRule, self).__init__(name, *args, **kwargs)
    self.out = out
    self.flatten_paths = flatten_paths or []
    self.flatten_paths = [path.replace('/', os.path.sep)
                          for path in self.flatten_paths]
Initializes an overlay view rule.
dataset/ETHPy150Open google/anvil-build/anvil/rules/overlay_rules.py/OverlayViewRule.__init__