private void exportToXls(final ServletOutputStream servletOutputStream, final AcademicInterval academicInterval)
throws IOException {
final List<Object> headers = getHeaders();
final Spreadsheet spreadsheet = new Spreadsheet("Execution Course Groupings", headers);
fillSpreadSheet(spreadsheet, academicInterval);
spreadsheet.exportToXLSSheet(servletOutputStream);
}
private List<Object> getHeaders() {
final List<Object> headers = new ArrayList<Object>();
headers.add("Execution Course");