Jetpack Compose sample. Composable function

Hello.kt

@Composable
fun Hello(name: String) = MaterialTheme {
    FlexColumn {
        inflexible { // Item height will be equal content height
            TopAppBar<MenuItem>( // App Bar with title
                title = { Text("Jetpack Compose Sample") }
            )
        }
        expanded(1F) { // occupy whole empty space in the Column
            Center { // Center content
                Text("Hello $name!") // Text label
            }
        }
    }
}