convert deprecated @nativeGetter/@nativeSetter to inline extension function

after.kt

external interface MethodMap

inline operator fun MethodMap.get(propertyName: String): Function<Any>? = this.asDynamic()[propertyName]
inline operator fun MethodMap.set(propertyName: String, value: Function<Any>?) {
    this.asDynamic()[propertyName] = value
}

before.kt

external interface MethodMap {
    @nativeGetter
    operator fun get(propertyName: String): Function<Any>?
    @nativeSetter
    operator fun set(propertyName: String, value: Function<Any>)
}