presto-main/src/main/java/io/prestosql/operator/NestedLoopJoinPages.java/NestedLoopJoinPages/NestedLoopJoinPages
class NestedLoopJoinPages:    NestedLoopJoinPages(List<Page> pages, DataSize estimatedSize, OperatorContext operatorContext)
    {
        requireNonNull(pages, "pages is null");
        requireNonNull(operatorContext, "operatorContext is null");
        requireNonNull(estimatedSize, "estimatedSize is null");
        this.pages = ImmutableList.copyOf(pages);
        this.estimatedSize = estimatedSize;
    }