presto-main/src/main/java/io/prestosql/operator/NestedLoopJoinOperator.java/NestedLoopJoinOperator/NestedLoopJoinOperator
class NestedLoopJoinOperator:    private NestedLoopJoinOperator(OperatorContext operatorContext, NestedLoopJoinBridge joinBridge, Runnable afterClose)
    {
        this.operatorContext = requireNonNull(operatorContext, "operatorContext is null");
        this.nestedLoopJoinPagesFuture = joinBridge.getPagesFuture();
        this.afterClose = requireNonNull(afterClose, "afterClose is null");
    }