@Override
  public ColumnMetadata getColumnMetadata(
      ConnectorSession session, ConnectorTableHandle tableHandle, ColumnHandle columnHandle) {
    if (tableHandle instanceof KeyedTableHandle) {
      return keyedConnectorMetadata.getColumnMetadata(session, tableHandle, columnHandle);
    } else {
      return icebergMetadata.getColumnMetadata(session, tableHandle, columnHandle);
    }
  }
{@link MixedFormatConnectorMetadata} is a Union {@link ConnectorMetadata} contain {@link
KeyedConnectorMetadata} and {@link IcebergMetadata}. This is final {@link ConnectorMetadata}
provided to Trino
amoro-format-mixed/amoro-mixed-trino/src/main/java/org/apache/amoro/trino/MixedFormatConnectorMetadata.java