The following list of samples are missing tests and some READMEs.

• flexible/analytics
• flexible/async-rest
• flexible/cloudsql
• flexible/cloudstorage
• flexible/cron
• flexible/datastore (Missing README)
• flexible/disk (Missing README)
• flexible/endpoints
• flexible/extending-runtime
• flexible/mailgun
• flexible/mailjet
• flexible/memcache (ignore for now)
• flexible/sendgrid
• flexible/sparkjava
• flexible/static-files (Also Missing README)
• flexible/twilio
• appengine/analytics (Also Missing README)
• appengine/channel (Also Missing README)
• appengine/cloudsql (Also Missing README)
• appengine/endpoints-framework-v2/backend
• appengine/firebase-event-proxy/gae-firebase-event-proxy
• appengine/firebase-event-proxy/gae-firebase-listener-python
• appengine/helloworld-new-plugins
• appengine/images/
• appengine/logs/
• appengine/mail
• appengine/mailgun
• appengine/mailjet
• appengine/memcache (Also Missing README)
• appengine/oauth2
• appengine/remote
• appengine/sendgrid
• appengine/static-files (Also Missing README)
• appengine/taskqueue/pull
• appengine/twilio
• appengine/urlfetch
• compute/cmdline
• compute/error-reporting
• compute/sendgrid