def append_upload_session(cursor, body, close=false)
      args = {cursor: cursor.to_h, close: close}
      resp = upload_request('/files/upload_session/append_v2', body, args)
      cursor.offset += body.length
      cursor
    end
def append_upload_session(cursor, body, close=false)
      args = {cursor: cursor.to_h, close: close}
      resp = upload_request('/files/upload_session/append_v2', body, args)
      cursor.offset += body.length
      cursor
    end
Append more data to an upload session.

 @param [Dropbox::UploadSessionCursor] cursor
 @param [String, Enumerable] body
 @param [Boolean] close
 @return [Dropbox::UploadSessionCursor] cursor