code: def copy_object(self, container, obj, new_container, new_obj_name=None,
              content_type=None, extra_info=None):
          
          return self._manager.copy_object(container, obj, new_container,
                  new_obj_name=new_obj_name, content_type=content_type)
docs: Copies the object to the new container, optionally giving it a new name.
          If you copy to the same container, you must supply a different name.
  
          You can optionally change the content_type of the object by supplying
          that in the 'content_type' parameter.
  
          The 'extra_info' parameter is included for backwards compatibility. It
          is no longer used at all, and will not be modified with swiftclient
          info, since swiftclient is not used any more.