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kotlinlang

Hi folks,
```class ServerError private constructor(val message: String, val code: Int) {
    fun &lt;T&gt; toErrorPayload(): HubPayload&lt;T&gt; = errorPayload(message, code)
}```
In this case the function `toErrorPayload` (for the sake of example ignore the HubPayload return type :)) naming prefix convention shouldBe `to` or `as` . Since im returning another object i guess the default is `to` , but if i want to emphasize that the values remain the same, just the wrapper is changing then should i name it `asErrorPayload` ? Thanks in advance for any answers !

Generally I use `to` , I only use `as` when `to` is already there, i.e, `toString()`. I have seen this behavior in some popular libs but I would like to know more opinions too

Semantically I'd see `as` as a view of the value in the alternative shape with `to` being a copy in the alternative shape.

When it comes to immutable structures there's no real difference and I'd lean towards `to`. As an aside I'd probably declare it as an extension method unless the conversion truly belongs to the class.