anchor.diff:  
     const CodeSizeSnapshotTable._(
       this.rootNode,
  +    this.autoExpandRoot,
       this.treeColumn,
       this.sortColumn,
       this.columns,
  
positive.code: 
    const CodeSizeDiffTable._(
      this.rootNode,
      this.treeColumn,
      this.sortColumn,
      this.columns,
  
negative.code: 
      return CodeSizeSnapshotTable._(
        rootNode,
        autoExpandRoot,
        treeColumn,
        sizeColumn,
        columns,
  