docs: private AbstractPlanNode inlineLimitOperator(AbstractPlanNode root,
              LimitPlanNode topLimit) {
          if (isInlineLimitPlanNodePossible(root)) {
              root.addInlinePlanNode(topLimit);
          }
          else if (root instanceof ProjectionPlanNode &&
                  isInlineLimitPlanNodePossible(root.getChild(0)) ) {
              // In future, inlined this projection node for OrderBy and Aggregate
              // Then we could delete this ELSE IF block.
              root.getChild(0).addInlinePlanNode(topLimit);
          }
          else {
              topLimit.addAndLinkChild(root);
              root = topLimit;
          }
          return root;
      }