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/// <reference path="fourslash.ts" />
//// class FileSystemObject {
//// isFile(): this is Item {
//// return this instanceof Item;
//// }
//// isDirectory(): this is Directory {
//// return this instanceof Directory;
//// }
//// isNetworked(): this is (Networked & this) {
//// return !!(this as Networked).host;
//// }
//// constructor(public path: string) {}
//// }
////
//// class Item extends FileSystemObject {
//// constructor(path: string, public content: string) { super(path); }
//// }
//// class Directory extends FileSystemObject {
//// children: FileSystemObject[];
//// }
//// interface Networked {
//// host: string;
//// }
////
//// const obj: FileSystemObject = new Item("/foo", "");
//// if (obj.isFile()) {
//// obj./*1*/;
//// if (obj.isNetworked()) {
//// obj./*2*/;
//// }
//// }
//// if (obj.isDirectory()) {
//// obj./*3*/;
//// if (obj.isNetworked()) {
//// obj./*4*/;
//// }
//// }
//// if (obj.isNetworked()) {
//// obj./*5*/;
//// }
goTo.marker("1");
verify.completionListContains("content");
goTo.marker("2");
verify.completionListContains("host");
goTo.marker("3");
verify.completionListContains("children");
goTo.marker("4");
verify.completionListContains("host");
goTo.marker("5");
verify.completionListContains("host");
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