如何用Kotlin创建一个带参数的单例？

class MySingleton private constructor(private val parameter: String) {
    companion object {
        private var instance: MySingleton? = null

        fun getInstance(parameter: String): MySingleton {
            if (instance == null) {
                synchronized(MySingleton::class) {
                    if (instance == null) {
                        instance = MySingleton(parameter)
                    }
                }
            }
            return instance!!
        }
    }

    fun doSomething() {
        // 单例对象的方法
    }
}

val singleton = MySingleton.getInstance("parameter value")
singleton.doSomething()