private function tryClose()
{
if (parent::isDone()) {
return;
}
if ($this->condition_results) {
$step_instance = reset($this->step_instances);
if (!$step_instance || $step_instance->isDone()) {
$this->done();
}
return;
}
if ($this->elseif_instance && $this->elseif_instance->condition_results) {
if (!$this->elseif_instance || $this->elseif_instance->isDone()) {
$this->done();
}
return;
}
if ($this->else_instance) {
if (!$this->else_instance || $this->else_instance->isDone()) {
$this->done();
}
return;
}
}