boolean (PsiElement element, XPathVariableReference reference) { if (element instanceof XsltParameter) { final XsltTemplate template = XsltCodeInsightUtil.getTemplate(element, false); if (template == null || template.getMatchExpression() == null) return false; final XPathVariable t = reference.resolve(); if (t == null) return false; final PsiReference[] references = element.getReferences(); for (PsiReference r : references) { if (r.isReferenceTo(t)) return true; } } return false; }