@Override
  public String toString() {
    return String.format(
        "DeletionResource[%s]{referenceCount=%s}", deleteDataNode, getReferenceCount());
  }
Only the default implementation is provided here, which will not be called in practice, but is
only used to implement the interface
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/pipe/consensus/deletion/DeletionResource.java