private static boolean looksLikeTypeHint(@NotNull PyExpression expression) {
    final PyCallExpression call = as(expression, PyCallExpression.class);
    if (call != null) {
      final PyReferenceExpression callee = as(call.getCallee(), PyReferenceExpression.class);
      return callee != null &&
             ("TypeVar".equals(callee.getReferencedName()) || "TypeVarTuple".equals(callee.getReferencedName()) ||
              "ParamSpec".equals(callee.getReferencedName()));

    }

    final PyStringLiteralExpression pyString = as(expression, PyStringLiteralExpression.class);
    if (pyString != null) {
      if (pyString.getStringNodes().size() != 1 || pyString.getTextLength() > STRING_LITERAL_LENGTH_THRESHOLD) {
        return false;
      }
      final String content = pyString.getStringValue();
      return TYPE_ANNOTATION_LIKE.matcher(content).matches();
    }

    if (expression instanceof PyReferenceExpression || expression instanceof PySubscriptionExpression) {
      return isSyntacticallyValidAnnotation(expression);
    }

    return false;
  }
private static boolean looksLikeTypeHint(@NotNull PyExpression expression)