We don't transform private methods yet, but in class properties transform, still need to record private methods that classes have, so can correctly resolve private fields.
```js
class Outer {
#foo = 123;
method() {
class Inner {
#foo() {}
// Refers to `Inner`'s `#foo` method, not `Outer`'s `#foo` property
prop = this.#foo;
}
}
}
```
