title: Is it possible to synchronously load data from Firebase?
body: <p>I'm trying to update parts of a WebView in my Android app with data I'm getting from a peer connected via Firebase. For that, it could be helpful to execute blocking operations that will return the needed data. For example, an implementation of the Chat example that will wait until another chat participant writes something before the push.setValue() to return.
  Is such a behavior possible with Firebase?</p>