boolean (final @NotNull PsiElement element, final @NotNull PsiField field) { final Ref<Boolean> result = new Ref<>(Boolean.FALSE); element.accept(new JavaRecursiveElementWalkingVisitor() { @Override public void visitReferenceExpression(@NotNull PsiReferenceExpression expression) { if (expression.resolve() == field) { result.set(Boolean.TRUE); } super.visitReferenceExpression(expression); } }); return result.get().booleanValue(); }