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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 chat_post_message(self, channel, text, **params):
 """chat.postMessage This method posts a message to a channel. https://api.slack.com/methods/chat.postMessage """

        method = 'chat.postMessage'
        params.update({
            'channel': channel,
            'text': text,
        })
        return self._make_request(method, params)