private static void putCaretOnFieldName(Editor editor, PsiElement occurrence) {
   PyQualifiedExpression qExpr =
       PsiTreeUtil.getParentOfType(occurrence, PyQualifiedExpression.class, false);
   if (qExpr != null && !qExpr.isQualified()) {
     qExpr = PsiTreeUtil.getParentOfType(qExpr, PyQualifiedExpression.class);
   }
   if (qExpr != null) {
     final ASTNode nameElement = qExpr.getNameElement();
     if (nameElement != null) {
       final int offset = nameElement.getTextRange().getStartOffset();
       editor.getCaretModel().moveToOffset(offset);
     }
   }
 }