Adds one tab button per panel declared in the registry.
Driven by what is actually registered rather than by a fixed list, which is what lets a plugin contribute a panel without the desktop shell knowing about it in advance.
The tab strip the buttons are appended to.
Adds one tab button per panel declared in the registry.
Driven by what is actually registered rather than by a fixed list, which is what lets a plugin contribute a panel without the desktop shell knowing about it in advance.