def __init__(self, closurized_namespaces=None, error_handler=None):

    self._error_handler = error_handler

    # If we have namespaces, freeze the set.
    if closurized_namespaces:
      closurized_namespaces = frozenset(closurized_namespaces)

    self._closurized_namespaces = closurized_namespaces
Creates a new pass.
dataset/ETHPy150Open google/closure-linter/closure_linter/aliaspass.py/AliasPass.__init__