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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 api_call(self, method, **params):
 """ Call Telegram API. See https://core.telegram.org/bots/api for reference. :param str method: Telegram API method :param params: Arguments for the method call """

        coro = self._api_call(method, **params)
        # Explicitly ensure that API call is executed
        return asyncio.ensure_future(coro)