title: Android - Firebase Firestore - Write the same document to different collections
body: <p>I have to write the <strong>same</strong> document to different collections, so I think that batched writes are not good for this. I would like to know if there is a function in firestore database, I expect written in javascript, that can copy a document I write once and paste it to different locations. These locations should be read from an array in the database.</p>
  
  <p>Anyone could help me?</p>
  
  <p>Thanks a lot and sorry for my low English.</p>