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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_provider_uri(self, provider_display_name):
 """ Gets uri for a specific provider. Args: provider_display_name: Display name of the provider. Returns: uri """

        providers = self._provider_client.get_by('displayName', provider_display_name)
        return providers[0]['uri'] if providers else None