Simple Animation with Jetpack Compose

[alghe-global]

URL of codelab
https://developer.android.com/codelabs/basic-android-kotlin-compose-woof-animation?continue=https%3A%2F%2Fdeveloper.android.com%2Fcourses%2Fpathways%2Fandroid-basics-compose-unit-3-pathway-3%23codelab-https%3A%2F%2Fdeveloper.android.com%2Fcodelabs%2Fbasic-android-kotlin-compose-woof-animation#2

In which task and step of the codelab can this issue be found?
Display the icon: 1

Describe the problem

import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue

var expanded by remember { mutableStateOf(false) }

is misleading. the code for DogItem composable function is missing; it should be added as such:

import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue

@Composable
fun DogItem(
    dog: Dog,
    modifier: Modifier = Modifier
) {
    var expanded by remember { mutableStateOf(false) }
    Card(modifier = modifier) {
        ...
    }

Steps to reproduce?

1. Go to...
2. Click on...
3. See error...

Versions
Android Studio version:
API version of the emulator:

Additional information
Include screenshots if they would be useful in clarifying the problem.