private static @Nullable String suggestVariableNameFromLiterals(@NotNull PsiExpression expr) {
    String text = findLiteralText(expr);
    if (text == null) return null;
    return expr.getType() instanceof PsiArrayType ? StringUtil.pluralize(text) : text;
  }
private static @Nullable String suggestVariableNameFromLiterals(@NotNull PsiExpression expr)