new_contents: import os
  import http
  import json
  import asyncio
  
  from tornado import web
  
  from waterbutler.core.streams import RequestStreamReader
  
  from waterbutler.server import utils
  from waterbutler.server import settings
  from waterbutler.server.handlers import core
  from waterbutler.server.identity import get_identity
  
  
  class MoveHandler(core.BaseCrossProviderHandler):
      JSON_REQUIRED = True
      ACTION_MAP = {
          'POST': 'move'
      }
  
      @utils.coroutine
      def prepare(self):
          yield from super().prepare()
  
      @utils.coroutine
      def post(self):
          metadata, created = (
              yield from self.provider.move(
                  self.dest_provider,
                  self.arguments,
                  self.json
              )
          )
  
          if created:
              self.set_status(201)
          else:
              self.set_status(200)
  
          self.write(metadata)
  
          # TODO copy/created?
          self._send_hook(
              'create' if created else 'update',
              metadata,
          )
  
subject: Add the Move handler