code: public function convert(Stmt\Return_ $node)
      {
          $collected = $this->assignManipulator->collectAssignInCondition($node->expr);
          $node->expr = $this->assignManipulator->transformAssignInConditionTest($node->expr);
  
          return $collected->getCollected().'return'.(null !== $node->expr ? ' '.$this->dispatcher->p($node->expr) : '').';';
      }
docs: @param Stmt\Return_ $node
  
  @return string