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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 _call(self, method, url, params):
 """Return response from Clef API call."""

        request_params = {}
        if method == 'GET':
            request_params['params'] = params
        elif method == 'POST':
            request_params['data'] = params
        response = requests.request(method, url, **request_params)
        return response