code: func (r Network_Bandwidth_Version1_Allotment) GetCustomBandwidthDataByDate(graphData *datatypes.Container_Graph) (resp datatypes.Container_Graph, err error) {
  	params := []interface{}{
  		graphData,
  	}
  	err = r.Session.DoRequest("SoftLayer_Network_Bandwidth_Version1_Allotment", "getCustomBandwidthDataByDate", params, &r.Options, &resp)
  	return
  }
docs: // Retrieve bandwidth graph by date.