code: public OvhChartReturn serviceName_statistics_chart_GET(String serviceName, OvhRtmChartPeriodEnum period, OvhRtmChartTypeEnum type) throws IOException {
  		String qPath = "/dedicated/server/{serviceName}/statistics/chart";
  		StringBuilder sb = path(qPath, serviceName);
  		query(sb, "period", period);
  		query(sb, "type", type);
  		String resp = exec(qPath, "GET", sb.toString(), null);
  		return convertTo(resp, OvhChartReturn.class);
  	}
docs: Retrieve RTM graph values
  
  REST: GET /dedicated/server/{serviceName}/statistics/chart
  @param type [required] RTM chart type
  @param period [required] chart period
  @param serviceName [required] The internal name of your dedicated server