XULSortServiceImpl::GetResourceValue(contentSortInfo *contentSortInfo, sortPtr sortInfo, PRBool first, PRBool useCache,
XULSortServiceImpl::GetResourceValue(nsIRDFResource *res1, sortPtr sortInfo, PRBool first, PRBool useCache,
XULSortServiceImpl::GetResourceValue(contentSortInfo *contentSortInfo, sortPtr sortInfo, PRBool first, PRBool useCache,				PRBool onlyCollationHint, nsIRDFNode **target, PRBool &isCollationKey){	nsresult		rv = NS_OK;	*target = nsnull;	isCollationKey = PR_FALSE;	nsIRDFResource *res1 = contentSortInfo->resource;	if ((res1) && (sortInfo->naturalOrderSort == PR_FALSE))	{		rv = GetTarget(contentSortInfo, sortInfo, first, onlyCollationHint, PR_TRUE, target, isCollationKey);	}	return(rv);}