// response element set type
locator = "csw:ElementSetName";
parsed = pHelper.getParameterValues(root,xpath,locator);
supported = svcProps.getSupportedValues(CswConstants.Parameter_ElementSetType);
qOptions.setElementSetType(vHelper.validateValue(supported,locator,parsed,false));
// response element set type names
String elementSetType = qOptions.getElementSetType();
if (elementSetType != null) {
locator = "csw:ElementSetName/@typeNames";