UnityEditor.AudioGroupDataSource.GetUniqueNodeID C# (CSharp) Method

        public static int GetUniqueNodeID(AudioMixerGroupController group)
        {
            return group.GetInstanceID();
        }

 public override void FetchData()
 {
     if ((Object)this.m_Controller == (Object)null)
     {
         this.m_RootItem = (TreeViewItem)null;
     }
     else if ((Object)this.m_Controller.masterGroup == (Object)null)
     {
         Debug.LogError((object)"The Master group is missing !!!");
         this.m_RootItem = (TreeViewItem)null;
     }
     else
     {
         this.m_RootItem = (TreeViewItem) new AudioMixerTreeViewNode(AudioGroupDataSource.GetUniqueNodeID(this.m_Controller.masterGroup), 0, (TreeViewItem)null, this.m_Controller.masterGroup.name, this.m_Controller.masterGroup);
         this.AddNodesRecursively(this.m_Controller.masterGroup, this.m_RootItem, 1);
         this.m_NeedRefreshVisibleFolders = true;
     }
 }