Confusion about scrolling

I haven't been able to find what the final word on scrolling in Android is. According to the python source code, there is a method scroll. But it doesn't work.

According to the Android docs, there's a thing called UiScrollable. But it doesn't work.

According to the appium docs, there's a thing called TouchActions. But it doesn't work.

driver.execute_script("mobile: scroll", {"direction": 'down', 'element': el})
If you do this, you are told that "the method has not yet been implemented".

So what is the final word on scrolling? That it's completely broken? That scroll is supposed to work, and that there is something wrong with my setup?

まず、Python クライアントの scroll メソッドを追跡し、レポートで言及されている Android UiScrollable、Appium TouchActions、mobile: scroll のエントリポイントと比較します。可能であれば例を再現し、どのスクロール方法がサポートされているか、何が失敗するか、報告されている未実装メソッドが想定されたものかどうかを記録してください。