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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def init (self, base_ref, base_url, parent_url, recursion_level, aggregate, line, column, page, name, url_encoding, extern):
 """Initialize the scheme."""

        super(FileUrl, self).init(base_ref, base_url, parent_url,
         recursion_level, aggregate, line, column, page, name, url_encoding, extern)
        self.scheme = u'file'