def __init__()

in fluent/migrate/transforms.py [0:0]


    def __init__(self, path, key):
        if not path.endswith(".ftl"):
            raise NotSupportedError(
                "Please use COPY to migrate from legacy files " "({})".format(path)
            )
        if key[0] == "-" and "." in key:
            raise NotSupportedError(
                "Cannot migrate from Term Attributes, as they are"
                "locale-dependent ({})".format(path)
            )
        super().__init__(path, key)