private void Awake()
        {
            instance = this;
            count    = 0;

            foreach (Shortcut shortcut in Shortcut.shortcuts)
            {
                AddKeymapping(shortcut.name, shortcut);
            }
        }
 private void OnDestroy()
 {
     instance         = null;
     m_EditingBinding = null;
     m_components.Clear();
 }