Command to Use When Unable to Select iOS Emulator during Flutter Development

I started Flutter development and decided to choose VSCode between Android Studio and Visual Studio Code (VSCode) because of its versatility among the free IDE options available.
While IntelliJ and Android Studio seem to be officially recommended, VSCode also appears to have gained official recognition. Having experience in Android development, the Android emulator worked well without any issues.
However, an unexpected problem occurred with the iOS emulator, where it could not be selected.
The cause was that I omitted the 'sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer' command during the initial device setup. I wasn't familiar with English, so I skim-read the instructions at first, but after verifying that both Android and iOS emulators worked, I executed the command. As a result, the currently available iOS devices appeared appropriately. I recommend others experiencing the same issue to try this command as well! It is important to read technical documents more carefully and find solutions step by step when problems occur.