```ruby
class Googleappenginelauncher < Cask
  url 'https://googleappengine.googlecode.com/files/GoogleAppEngineLauncher-1.8.8.dmg'
  homepage 'https://developers.google.com/appengine/'
  version '1.8.8'
  sha256 'c6c75e7e97b9ed1e8445aece0d336e94919e3a53b8e707ce8b93fff79159db4c'
  link 'GoogleAppEngineLauncher.app'
end
```

Update Google App Engine Launcher from 1.8.8 to 1.9.0
user
```ruby
class Googleappenginelauncher < Cask
  url 'https://commondatastorage.googleapis.com/appengine-sdks/featured/GoogleAppEngineLauncher-1.9.0.dmg'
  homepage 'https://developers.google.com/appengine/'
  version '1.9.0'
  sha256 'bce8ccc76b7e14d97961c6bb0828ebfd623dbdf368929e7395219b47c22323bf'
  link 'GoogleAppEngineLauncher.app'
end
```
assistant