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				@@ -570,8 +570,8 @@ class group(Signature): 
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				                 task['args'] = task._merge(d['args'])[0] 
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				         return group(tasks, app=app, **kwdict(d['options'])) 
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				-    def _prepared(self, tasks, partial_args, group_id, root_id, 
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				-            dict=dict, Signature=Signature, from_dict=Signature.from_dict): 
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				+    def _prepared(self, tasks, partial_args, group_id, root_id, dict=dict, 
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				+                  Signature=Signature, from_dict=Signature.from_dict): 
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				         for task in tasks: 
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				             if isinstance(task, dict): 
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				                 if isinstance(task, Signature): 
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