default void handleUndeleteRequest(NetworkRequest request) throws InterruptedException, IOException {
    throw new UnsupportedOperationException("Undelete request not supported on this node");
  }
Undelete the blob from the store.
@param request the request that contains the partition and the id of the blob that needs to be undeleted.
@throws IOException if there are I/O errors carrying our the required operation.
@throws InterruptedException if request processing is interrupted.
ambry-api/src/main/java/com/github/ambry/protocol/RequestAPI.java