13 public function getState()
21 public function setState(Data $state)
23 $this->state = $state;
29 public function setStateValue($key, $value)
31 $this->state[$key] = $value;
37 public function updateState(Data $update)
39 $this->state->update($update);
45 public function resetState()
47 $this->state = new Data();