code: def update(self, prms):
          
          with self.sess.as_default():
              fetches = []
              feeds = {}
              for name, value in six.iteritems(prms):
                  assert name in self.name_map
                  var = self.name_map[name]
                  fetches.append(var.initializer)
                  # This is the implementation of `var.load`
                  feeds[var.initializer.inputs[1]] = SessionUpdate.relaxed_value_for_var(value, var)
              self.sess.run(fetches, feed_dict=feeds)
docs: Args:
              prms(dict): dict of {variable name: value}
                  Any name in prms must be in the graph and in vars_to_update.