--- a/eric6/Graphics/PackageItem.py	Wed May 05 17:29:41 2021 +0200
+++ b/eric6/Graphics/PackageItem.py	Wed May 05 18:17:24 2021 +0200
@@ -256,3 +256,16 @@
         self.__calculateSize()
         
         return True
+    
+    def toDict(self):
+        """
+        Public method to collect data to be persisted.
+        
+        @return dictionary containing data to be persisted
+        @rtype dict
+        """
+        return {
+            "name": self.model.getName(),
+            "no_nodules": self.noModules,
+            "modules": self.model.getModules(),
+        }