@Override
  public boolean supportsNestedProjection() {
    // TODO: support nested projection
    return false;
  }
Flink table api that generates mixed-format base/change file source operators.
amoro-format-mixed/amoro-mixed-flink/amoro-mixed-flink-common/src/main/java/org/apache/amoro/flink/table/MixedFormatFileSource.java