boolean (@NotNull Project project, @NotNull Editor editor, @NotNull PsiFile file) { PsiElement comma = currentCommaElement(editor, file); if (comma == null) { return false; } final PsiElement left = smartAdvance(comma, false); final PsiElement right = smartAdvance(comma, true); return left != null && right != null && !left.getText().equals(right.getText()) && Flipper.isCanFlip(left, right); }