修饰符与 .apply 一起使用时不起作用

为什么border在与 一起使用时不应用修饰符.apply { }？

val selected = remember { mutableStateOf(true) }

val selectableModifier = Modifier
    .padding(horizontal = 5.dp, vertical = 8.dp)
    .apply {
    // this changes, but border is not applied
    println("$selected changed") 
    if (selected) {
        border(
            BorderStroke(1.dp, MaterialTheme.colors.primaryVariant),
            RoundedCornerShape(13.dp)
        )
    }
}

回答

val selected by remember { mutableStateOf(true) }
val selectableModifier = Modifier
.padding(horizontal = 5.dp, vertical = 8.dp)
.run {
if (selected) {
border(
BorderStroke(1.dp, MaterialTheme.colors.primaryVariant),
RoundedCornerShape(13.dp)
)
} else {
this
}
}