code: public function setTarget($value)
      {
          if (in_array($value, $this->possibleTargets)) {
              $this->_target = $value;
          } else {
              throw new Exception('Unknown deletion target ' . $value);
          }
      }
docs: Set target.
  
  @param [[@doctodo param_type:value]] $value [[@doctodo param_description:value]]
  
  @throws Exception [[@doctodo exception_description:Exception]]