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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def unpickle_docs(self):
 """Sets the pointers for the docstrings that have groups."""

        for doc in self.docstring:
            if (doc.parent_name is not None and 
                doc.parent_name in self.groups):
                doc.group = self.groups[doc.parent_name]