Returns the dock pane associated with the specified DAML ID.
Remarks
Dock panes are singletons: there is never more than one instance of a particular dock pane and once created, they are not destroyed until the application shuts down. Use this function to access a specific dock pane. Of the dock pane doesn't exist in the collection, it will be created. Use IsDockPaneCreated to check if a dock pane already exists and IsVisible to determine a dock pane's visibility, neither of these functions will create the dock pane if it doesn't exist.