UnityEditor.EditorCache.CleanupUntouchedEditors C# (CSharp) Method

        public void CleanupUntouchedEditors()
        {
            List<Object> list = new List<Object>();
            foreach (Object obj2 in this.m_EditorCache.Keys)
            {
                if (!this.m_UsedEditors.ContainsKey(obj2))
                {
                    list.Add(obj2);
                }
            }
            if (this.m_EditorCache != null)
            {
                foreach (Object obj3 in list)
                {
                    EditorWrapper wrapper = this.m_EditorCache[obj3];
                    this.m_EditorCache.Remove(obj3);
                    if (wrapper != null)
                    {
                        wrapper.Dispose();
                    }
                }
            }
            this.m_UsedEditors.Clear();
        }

        // This is the preview area at the bottom of the screen
        void PreviewArea()
        {
            GUI.Box(new Rect(0, m_TopSize, position.width, m_PreviewSize), "", Styles.previewBackground);

            if (m_ListArea.GetSelection().Length == 0)
            {
                return;
            }

            EditorWrapper p = null;
            UnityObject   selectedObject = GetCurrentObject();

            if (m_PreviewSize < kPreviewExpandedAreaHeight)
            {
                // Get info string
                string s;
                if (selectedObject != null)
                {
                    p = m_EditorCache[selectedObject];
                    string typeName = ObjectNames.NicifyVariableName(selectedObject.GetType().Name);
                    if (p != null)
                    {
                        s = p.name + " (" + typeName + ")";
                    }
                    else
                    {
                        s = selectedObject.name + " (" + typeName + ")";
                    }

                    s += "      " + AssetDatabase.GetAssetPath(selectedObject);
                }
                else
                {
                    s = "None";
                }

                LinePreview(s, selectedObject, p);
            }
            else
            {
                if (m_EditorCache == null)
                {
                    m_EditorCache = new EditorCache(EditorFeatures.PreviewGUI);
                }

                // Get info string
                string s;
                if (selectedObject != null)
                {
                    p = m_EditorCache[selectedObject];
                    string typeName = ObjectNames.NicifyVariableName(selectedObject.GetType().Name);
                    if (p != null)
                    {
                        s = p.GetInfoString();
                        if (s != "")
                        {
                            s = p.name + "\n" + typeName + "\n" + s;
                        }
                        else
                        {
                            s = p.name + "\n" + typeName;
                        }
                    }
                    else
                    {
                        s = selectedObject.name + "\n" + typeName;
                    }

                    s += "\n" + AssetDatabase.GetAssetPath(selectedObject);
                }
                else
                {
                    s = "None";
                }

                // Make previews
                if (m_ShowWidePreview.faded != 0.0f)
                {
                    GUI.color = new Color(1, 1, 1, m_ShowWidePreview.faded);
                    WidePreview(m_PreviewSize, s, selectedObject, p);
                }
                if (m_ShowOverlapPreview.faded != 0.0f)
                {
                    GUI.color = new Color(1, 1, 1, m_ShowOverlapPreview.faded);
                    OverlapPreview(m_PreviewSize, s, selectedObject, p);
                }
                GUI.color = Color.white;
                m_EditorCache.CleanupUntouchedEditors();
            }
        }