presto-main/src/main/java/io/prestosql/operator/index/PagesIndexBuilderOperator.java/PagesIndexBuilderOperatorFactory/PagesIndexBuilderOperatorFactory
class PagesIndexBuilderOperatorFactory:        public PagesIndexBuilderOperatorFactory(int operatorId, PlanNodeId planNodeId, IndexSnapshotBuilder indexSnapshotBuilder)
        {
            this.operatorId = operatorId;
            this.planNodeId = requireNonNull(planNodeId, "planNodeId is null");
            this.indexSnapshotBuilder = requireNonNull(indexSnapshotBuilder, "indexSnapshotBuilder is null");
        }