src/vs/workbench/contrib/files/common/explorerModel.ts/ExplorerItem/constructor
class ExplorerItem:	constructor(
		public resource: URI,
		private readonly fileService: IFileService,
		private _parent: ExplorerItem | undefined,
		private _isDirectory?: boolean,
		private _isSymbolicLink?: boolean,
		private _readonly?: boolean,
		private _name: string = basenameOrAuthority(resource),
		private _mtime?: number,
		private _unknown = false
	) {
		this._isDirectoryResolved = false;
	}