public byte toByteValue() {
    return value;
  }
Returns the byte value representation of this {@link ChangeAction}. The byte value is used for
serialization and deserialization.

<p>

<ul>
  <li>"0" represents {@link #INSERT}.
  <li>"1" represents {@link #UPDATE_BEFORE}.
  <li>"2" represents {@link #UPDATE_AFTER}.
  <li>"3" represents {@link #DELETE}.
</ul>
amoro-format-iceberg/src/main/java/org/apache/amoro/data/ChangeAction.java