BooksViewModel_1.java

class BooksViewModel extends ViewModel {
    private MutableLiveData<List<Book>> books;

    LiveData<List<Book>> getBooks() {
        if (books == null) {
            books = new MutableLiveData<List<Book>>();
        }
        return books;
    }

    public void loadBooks(String query) {
        // Here we will load the books from the Google Books API
    }
}