src/vs/workbench/api/browser/mainThreadFileSystem.ts/MainThreadFileSystem/$onFileSystemChange
class MainThreadFileSystem:	$onFileSystemChange(handle: number, changes: IFileChangeDto[]): void {
		const fileProvider = this._fileProvider.get(handle);
		if (!fileProvider) {
			throw new Error('Unknown file provider');
		}
		fileProvider.$onFileSystemChange(changes);
	}