src/vs/workbench/api/common/extHostDocumentData.ts/ExtHostDocumentData/constructor
class ExtHostDocumentData:	constructor(
		private readonly _proxy: MainThreadDocumentsShape,
		uri: URI, lines: string[], eol: string, versionId: number,
		private _languageId: string,
		private _isDirty: boolean,
		private readonly _notebook?: vscode.NotebookDocument | undefined
	) {
		super(uri, lines, eol, versionId);
	}