code: public function setWithVariablesInReturn(?bool $withVariablesInReturn)
      {
          $this->withVariablesInReturn = $withVariablesInReturn;
          $this->_withVariablesInReturn = null !== $withVariablesInReturn;
  
          return $this;
      }
docs: Set with variables in return
  
  @param boolean $withVariablesInReturn
  @return object