public static Projection of(int[][] indexes) {
    if (indexes.length == 0) {
      return empty();
    }
    return new NestedProjection(indexes);
  }
Create a {@link Projection} of the provided {@code indexes}.

@see #toNestedIndexes()
amoro-format-mixed/amoro-mixed-flink/amoro-mixed-flink-common/src/main/java/org/apache/amoro/flink/util/Projection.java