code: def copy_to(self, destination):
          
          target = self.__get_destination__(destination)
          logger.info("Copying %s to %s" % (self, target))
          shutil.copy(self.path, unicode(destination))
          return target
docs: Copies the file to the given destination. Returns a File
          object that represents the target file. `destination` must
          be a File or Folder object.