WIP: objc utilities

Sources/Observing/ListMonitor.swift

@@ -158,6 +158,17 @@ public final class ListMonitor<T: NSManagedObject>: Hashable {
         ]
     }
     
+    /**
+     Checks if the `ListMonitor` has at least one section
+     
+     - returns: `true` if at least one section exists, `false` otherwise
+     */
+    @warn_unused_result
+    public func hasSections() -> Bool {
+        
+        return self.sections().count > 0
+    }
+    
     /**
      Checks if the `ListMonitor` has at least one object in any section.