163         let childNode = this.nodeMap.get(edge.toNodeId);  variable
172         let firstRetainerSlotIndex = this.firstRetainerIndex[childNode.nodeIndex];  variable
319       let childNode = this.nodeMap.get(edge.toNodeId);  variable
390             let childNode = this.nodeMap.get(edge.toNodeId);  variable
595       let childNode = this.nodeMap.get(edge.toNodeId);  variable
609       let childNode = this.nodeMap.get(edge.toNodeId);  variable
622         let childNode = this.nodeMap.get(edge.toNodeId);  variable
663         let childNode = this.nodeMap.get(edge.toNodeId);  variable
911       let childNode = this.nodeMap.get(edge.toNodeId);  variable
995     for (let childNode of retains) {  variable
996       let node = this.nodes[childNode.index];  variable