original_string: public function lock(Request $request)
      {
          $cacheKey = $this->getCacheKey($request);
  
          if (isset($this->locks[$cacheKey])) {
              return false;
          }
  
          $this->locks[$cacheKey] = $this->lockFactory
              ->createLock($cacheKey);
  
          return $this->locks[$cacheKey]->acquire();
      }
code: public function lock(Request $request)
      {
          $cacheKey = $this->getCacheKey($request);
  
          if (isset($this->locks[$cacheKey])) {
              return false;
          }
  
          $this->locks[$cacheKey] = $this->lockFactory
              ->createLock($cacheKey);
  
          return $this->locks[$cacheKey]->acquire();
      }
code_tokens: public function lock ( Request $ request ) { $ cacheKey = $ this -> getCacheKey ( $ request ) ; if ( isset ( $ this -> locks [ $ cacheKey ] ) ) { return false ; } $ this -> locks [ $ cacheKey ] = $ this -> lockFactory -> createLock ( $ cacheKey ) ; return $ this -> locks [ $ cacheKey ] -> acquire ( ) ; }
docstring: Locks the cache for a given Request.
  
  @param Request $request A Request instance
  
  @return bool|string true if the lock is acquired, the path to the current lock otherwise
docstring_tokens: Locks the cache for a given Request .