c# – 查找基本类型的属性

public IEnumerable<CodeIssue> GetIssues(IDocument document,CommonSyntaxNode node,CancellationToken cancellationToken)
    {
        var methodDeclaration = (MethodDeclarationSyntax)node;
        var semanticModel = document.GetSemanticModel(cancellationToken);

        var methodSymbol = semanticModel.GetDeclaredSymbol(methodDeclaration);
        var typeSymbol = methodSymbol.ContainingType;

        // The following only gets attributes declared on this class,how to
        // also include those declared on a base class ?
        var attributes = typeSymbol.GetAttributes();

有没有一种更好的方法比走上typeSymbol.BaseType一直到System.Object并在途中调用GetAttributes()？

另外,有没有更好的方法来检查typeSymbol是否派生自特定的类而不是向上走.BaseType并手动检查

(是的,有一个原因从下面的示例中看不到检查MethodDeclarationSyntax节点而不是ClassDeclarationSyntax节点)