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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 url(self, version=None, **kwargs):
 """Returns the first matching URL found for the specified arguments"""

        for url in self.urls(version):
            if [key for key in kwargs.keys() if not '{' + key + '}' in url]:
                continue

            return url.format(**kwargs)

        raise KeyError('URL that takes all provided parameters not found')