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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 parse_extra(self, extra):
 """Parse extra request parameters to IIIFRequest object."""

        if extra.startswith('/'):
            extra = extra[1:]
        r = IIIFRequest(identifier='dummy',
                        api_version=self.api_version)
        r.parse_url(extra)
        if (r.info):
            raise IIIFStaticError("Attempt to specify Image Information in extras.")
        return(r)