public static @Nullable PsiElement getLargestStringLiteral(@NotNull PsiElement context) {
    PsiElement element = null;
    for (PsiElement current = context; current != null && isStringLiteralPart(current, element); current = current.getParent()) {
      element = current;
    }
    return element;
  }
public static @Nullable PsiElement getLargestStringLiteral(@NotNull PsiElement context)