diff --git a/src/rinoh/flowable.py b/src/rinoh/flowable.py
index 9f5dfaef..5d399cd6 100644
--- a/src/rinoh/flowable.py
+++ b/src/rinoh/flowable.py
@@ -460,6 +460,10 @@ def __init__(self, groupedflowables, flowables, first_flowable_state=None,
     def at_end(self):
         return self._index >= len(self.flowables)
 
+    @property
+    def content_flowable_state(self):
+        return self
+
     def __copy__(self):
         copy_flowables = copy(self.flowables)
         copy_first_flowable_state = copy(self.first_flowable_state)