Add a metric point to a given metric.

        :param id: Metric ID
        :param value: Value to plot on the metric graph
        :param timestamp: Unix timestamp of the point was measured
        :return: :class:`Response <Response>` object
        :rtype: requests.Response

def postMetricsPointsByID(self, id, value, **kwargs):
        '''Add a metric point to a given metric.

        :param id: Metric ID
        :param value: Value to plot on the metric graph
        :param timestamp: Unix timestamp of the point was measured
        :return: :class:`Response <Response>` object
        :rtype: requests.Response
        '''

        kwargs['value'] = value
        return self.__postRequest('/metrics/%s/points' % id, kwargs)