original_string: public function getSystemService(): SystemService
      {
          if ($this->_systemService === null) {
              $this->_systemService = new SystemService();
          }
  
          return $this->_systemService;
      }
code: public function getSystemService(): SystemService
      {
          if ($this->_systemService === null) {
              $this->_systemService = new SystemService();
          }
  
          return $this->_systemService;
      }
code_tokens: public function getSystemService ( ) : SystemService { if ( $ this -> _systemService === null ) { $ this -> _systemService = new SystemService ( ) ; } return $ this -> _systemService ; }
docstring: Returns the value of field _systemService.
  
  @return SystemService
docstring_tokens: Returns the value of field _systemService .