title: How to check if a file exists in Firebase storage from your android application?
body: <p>I am developing android application where a user clicks image, it gets stored in firebase, cloud functions process this image and stores the output back in the firebase in the form of text file. In order to display the output in android, application keeps checking for output file if it exists or not. If yes, then it displays the output in the application. If no, I have to keep waiting for the file till it is available. </p>
  
  <p>I'm unable to find any documentation for checking if any file is exists in Firebase or not. Any help or pointers will be helpful. </p>
  
  <p>Thanks. </p>