code: def load(self):
          
          variables = FrozenOrderedDict((_decode_variable_name(k), v)
                                        for k, v in self.get_variables().items())
          attributes = FrozenOrderedDict(self.get_attrs())
          return variables, attributes
docs: This loads the variables and attributes simultaneously.
          A centralized loading function makes it easier to create
          data stores that do automatic encoding/decoding.
  
          For example::
  
              class SuffixAppendingDataStore(AbstractDataStore):
  
                  def load(self):
                      variables, attributes = AbstractDataStore.load(self)
                      variables = {'%s_suffix' % k: v
                                   for k, v in variables.items()}
                      attributes = {'%s_suffix' % k: v
                                    for k, v in attributes.items()}
                      return variables, attributes
  
          This function will be called anytime variables or attributes
          are requested, so care should be taken to make sure its fast.