Use the Locked property of a RadPane to lock the pane.
	When a pane is locked its size remains unchanged during any of the operations including:
	- Resize of the splitter
- Resize of the panes regardles of the ResizeMode
- Collapse / Expand of the panes
	The size of a locked pane can be changed only from the client-side API when using 	the SetWidth or SetHeight methods of RadPane.