Classes/Console/Service/CacheService.php
public function flushGroups(array $groups)
    {
        $this->ensureCacheGroupsExist($groups);
        foreach ($groups as $group) {
            $this->cacheManager->flushCachesInGroup($group);
        }
    }
public function flushGroups(array $groups)
    {
        $this->ensureCacheGroupsExist($groups);
        foreach ($groups as $group) {
            $this->cacheManager->flushCachesInGroup($group);
        }
    }
Flushes all caches in specified groups.

@param array $groups
@throws NoSuchCacheGroupException