接口代理

    override fun write() {
    }
    override fun drive() {
    }
}
class SeniorManager(val driver: Driver, val writer: Writer): Driver by driver, Writer by writer
        println("开车呢")
    }
}
class PPTWriter: Writer {
    override fun write() {
        println("做PPT呢")
    }
}
}
interface Writer{
    fun write()
}
fun main(args: Array<String>) {
    val driver = CarDriver()
    val writer = PPTWriter()
    val seniorManager = SeniorManager(driver, writer)
    seniorManager.drive()