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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 get_builder_openshift_url(self):
 """ url of OpenShift where builder will connect """

        key = "builder_openshift_url"
        url = self._get_deprecated(key, self.conf_section, key)
        if url is None:
            logger.warning("%r not found, falling back to get_openshift_base_uri()", key)
            url = self.get_openshift_base_uri()
        return url