          """Create a new stored object, with a unique key."""
          key = str(uuid.uuid1())
          pathname = os.path.join(OBJECT_STORE_DIR, key)
          pickle.dump(content, open(pathname, 'wb'))
          return Response(status.HTTP_201_CREATED, content, {'Location': self.reverse(StoredObject, key=key)})
   
          
  class StoredObject(Resource):
      """Represents a stored object.
 
</s> remove     """Remove the oldest files in a directory 'dir', leaving at most 'max_files' remaining"""
 </s> add     """Remove the oldest files in a directory 'dir', leaving at most 'max_files' remaining.
    We use this to limit the number of resources in the sandbox.""" </s> remove MAX_FILES = 5
 </s> add MAX_FILES = 20
        remove_oldest_files(OBJECT_STORE_DIR, MAX_FILES)
          """Create a new stored object, with a unique key."""
          key = str(uuid.uuid1())
          pathname = os.path.join(OBJECT_STORE_DIR, key)
          pickle.dump(content, open(pathname, 'wb'))
        remove_oldest_files(OBJECT_STORE_DIR, MAX_FILES)
          return Response(status.HTTP_201_CREATED, content, {'Location': self.reverse(StoredObject, key=key)})
   
          
  class StoredObject(Resource):
      """Represents a stored object.
keep keep keep add keep keep keep keep keep
 Minor changes to examples and docs 
examples/objectstore/views.py