surf_storage_model->extension.storage.write = storage_action_write;
surf_storage_model->extension.storage.stat = storage_action_stat;
surf_storage_model->extension.storage.create_resource = storage_create_resource;
surf_storage_model->extension.storage.write = storage_action_write;
surf_storage_model->extension.storage.stat = storage_action_stat;
surf_storage_model->extension.storage.create_resource = storage_create_resource;