Read and update data using Room

[alan614]

URL of codelab:

In which task and step of the codelab can this issue be found?
Step 12

Describe the problem
The code this steps described does not match what's in the room branch. The first argument of the ItemDetailsBody composable function is stated as: itemUiState: ItemUiState , however in the room branch, it is itemDetailsUiState: ItemDetailsUiState

The ItemUIState data class does not have the outOfStock property that ItemDetailsUiState data class has which is relevant to the section

The instructions in the codelab states:

However, the actual code in github is:

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