Update to xo-collection 0.3.

packages/xen-api/package.json

@@ -46,7 +46,7 @@
     "minimist": "^1.1.1",
     "pw": "0.0.4",
     "xmlrpc": "^1.3.0",
-    "xo-collection": "0.0.1"
+    "xo-collection": "^0.3.0"
   },
   "devDependencies": {
     "babel": "^5",

packages/xen-api/src/index.js

@@ -163,7 +163,7 @@ export class Xapi extends EventEmitter {
     this._objectsByRefs = createObject(null)
     this._objectsByRefs['OpaqueRef:NULL'] = null
     this._objects = new Collection()
-    this._objects.getId = (object) => object.$id
+    this._objects.getKey = (object) => object.$id
 
     this._fromToken = ''
     this.on('connected', this._watchEvents)