@JsonProperty("keyMetadata")
  @Nullable
  public byte[] keyMetadataAsByteArray() {
    return keyMetadata;
  }
Copy from trino-iceberg TrinoDeleteFile and do some change to adapt mixed-format table
amoro-format-mixed/amoro-mixed-trino/src/main/java/org/apache/amoro/trino/delete/TrinoDeleteFile.java