UnityEditor.GameObjectTreeViewDataSource.FetchData C# (CSharp) Method

        public override void FetchData()
        {
            Profiler.BeginSample("SceneHierarchyWindow.FetchData");
            int depth = 0;
            double timeSinceStartup = EditorApplication.timeSinceStartup;
            HierarchyProperty property = new HierarchyProperty(HierarchyType.GameObjects);
            property.Reset();
            property.alphaSorted = this.IsUsingAlphaSort();
            if (this.m_RootInstanceID != 0)
            {
                bool flag = property.Find(this.m_RootInstanceID, null);
                string displayName = !flag ? "RootOfSceneHierarchy" : property.name;
                base.m_RootItem = new GameObjectTreeViewItem(this.m_RootInstanceID, depth, null, displayName);
                if (!flag)
                {
                    Debug.LogError("Root gameobject with id " + this.m_RootInstanceID + " not found!!");
                }
            }
            else
            {
                base.m_RootItem = new GameObjectTreeViewItem(this.m_RootInstanceID, depth, null, "RootOfSceneHierarchy");
            }
            if (!base.showRootNode)
            {
                this.SetExpanded(base.m_RootItem, true);
            }
            bool hasSearchString = !string.IsNullOrEmpty(this.m_SearchString);
            if (hasSearchString)
            {
                property.SetSearchFilter(this.m_SearchString, this.m_SearchMode);
            }
            base.m_VisibleRows = this.CalcVisibleItems(property, hasSearchString);
            this.m_NeedsChildParentReferenceSetup = true;
            base.m_NeedRefreshVisibleFolders = false;
            if ((this.sortingState.sortingObject != null) && this.sortingState.implementsCompare)
            {
                this.SortVisibleRows();
            }
            double num3 = EditorApplication.timeSinceStartup;
            double num4 = num3 - timeSinceStartup;
            double num5 = num3 - this.m_LastFetchTime;
            if ((num5 > 0.1) && (num4 > 0.05))
            {
                this.m_DelayedFetches++;
            }
            else
            {
                this.m_DelayedFetches = 0;
            }
            this.m_LastFetchTime = timeSinceStartup;
            base.m_TreeView.SetSelection(Selection.instanceIDs, false);
            if (SceneHierarchyWindow.s_Debug)
            {
                Debug.Log(string.Concat(new object[] { "Fetch time: ", num4 * 1000.0, " ms, alphaSort = ", this.IsUsingAlphaSort() }));
            }
            Profiler.EndSample();
        }