UnityEditor.ProjectBrowserColumnOneTreeViewDataSource.SetExpanded C# (CSharp) Method

        public override bool SetExpanded(int id, bool expand)
        {
            if (!base.SetExpanded(id, expand))
            {
                return false;
            }
            InternalEditorUtility.expandedProjectWindowItems = base.expandedIDs.ToArray();
            if (base.m_RootItem.hasChildren)
            {
                foreach (TreeViewItem item in base.m_RootItem.children)
                {
                    if (item.id == id)
                    {
                        EditorPrefs.SetBool(kProjectBrowserString + item.displayName, expand);
                    }
                }
            }
            return true;
        }
    }