void InitializeTrees()
{
if (m_SerializedObject != null)
{
m_SearchField = new SearchField();
m_TreeView = InputActionListTreeView.CreateFromSerializedObject(Apply, m_SerializedObject, ref m_TreeViewState);
m_TreeView.OnSelectionChanged = OnSelectionChanged;
m_TreeView.OnContextClick = OnContextClick;
m_CopyPasteUtility = new CopyPasteUtility(Apply, m_TreeView, m_SerializedObject);
if (m_PickerTreeViewState == null)
{
m_PickerTreeViewState = new TreeViewState();
}
LoadPropertiesForSelection();
}
}