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;
}
}