code: def pop_data(self):
          '''Replace this observation's data with a fresh container.
  
          Returns
          -------
          annotation_data : SortedKeyList
              The original annotation data container
          '''
  
          data = self.data
          self.data = SortedKeyList(key=self._key)
          return datf pop_data(self):
          '''Replace this observation's data with a fresh container.
  
          Returns
          -------
          annotation_data : SortedKeyList
              The original annotation data container
          '''
  
          data = self.data
          self.data = SortedKeyList(key=self._key)
          return data
docs: Replace this observation's data with a fresh container.
  
          Returns
          -------
          annotation_data : SortedKeyList
              The original annotation data container