code: func (r Account) GetExecutiveSummaryPdf(pdfType *string, historicalType *string, startDate *string, endDate *string) (resp []byte, err error) {
  	params := []interface{}{
  		pdfType,
  		historicalType,
  		startDate,
  		endDate,
  	}
  	err = r.Session.DoRequest("SoftLayer_Account", "getExecutiveSummaryPdf", params, &r.Options, &resp)
  	return
  }
docs: // This method will return a PDF of the specified report, with the specified period within the start and end dates. The pdfType must be one of 'snapshot', or 'historical'. Possible historicalType parameters are 'monthly', 'yearly', and 'quarterly'. Start and end dates should be in ISO 8601 date format.