src/vs/workbench/api/common/extHostNotebookEditor.ts/ExtHostNotebookEditor/constructor
class ExtHostNotebookEditor:	constructor(
		readonly id: string,
		private readonly _proxy: MainThreadNotebookEditorsShape,
		readonly notebookData: ExtHostNotebookDocument,
		visibleRanges: vscode.NotebookRange[],
		selections: vscode.NotebookRange[],
		viewColumn: vscode.ViewColumn | undefined
	) {
		this._selections = selections;
		this._visibleRanges = visibleRanges;
		this._viewColumn = viewColumn;
	}