Having this simple example:

@Composable
fun SimpleFilledTextFieldSample() {
    var text by remember { mutableStateOf("Hello") }

    TextField(
        value = text,
        onValueChange = { text = it },
        label = { Text("Label") }
    )
}

I’m trying to understand if every time a user presses a key the value/variable is updated, and where / what happens.
Where is the variable being stored?
I’m having trouble finding the answer in the android jetpack compose documentations..