Boolean function for resource conditions that returns True if the specified resource has no connections (that is, has no value). Otherwise returns False.
Examples and results
Resource filter: App_*
|This rule lets the user update an app, provided that the app is not connected (published) to a stream.|
|Resource filter: App.Sheet_*|
|This rule lets the user update sheets, provided that the app that the sheet belongs to is not published to a stream.|