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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_oauth_token_key_name(self, provider):
 """ Returns the token_key name for the oauth provider if none is configured defaults to oauth_token this is configured using OAUTH_PROVIDERS and token_key key. """

        for _provider in self.oauth_providers:
            if _provider["name"] == provider:
                return _provider.get("token_key", "oauth_token")