code: public InputStream find(String id, String rev) {
          return db.find(id, rev);
      }
docs: Finds the document with the specified document ID and revision and returns it as {@link
  InputStream}.
  <p><b>Note</b>: The stream must be closed after use to release the connection.</p>
  <P>Example usage:</P>
  <pre>
  {@code
  InputStream inputStream = null;
  try{
  inputStream = db.find("exampleId", "1-12345exampleRev");
  //do stuff with the stream
  } finally {
  //close the input stream
  inputStream.close();
  }
  }
  </pre>
  
  @param id  the document _id field
  @param rev the document _rev field
  @return the result as {@link InputStream}
  @throws NoDocumentException if the document is not found in the database at the specified
  revision
  @see <a
  href="https://console.bluemix.net/docs/services/Cloudant/api/document.html#read"
  target="_blank">Documents - read</a>