original_string: public static function clearTag($tag): bool
      {
          if (self::getInstance() instanceof HierarchicalPoolInterface) {
              return self::getInstance()->invalidateTag($tag);
          }
          return false;
      }
code: public static function clearTag($tag): bool
      {
          if (self::getInstance() instanceof HierarchicalPoolInterface) {
              return self::getInstance()->invalidateTag($tag);
          }
          return false;
      }
code_tokens: public static function clearTag ( $ tag ) : bool { if ( self :: getInstance ( ) instanceof HierarchicalPoolInterface ) { return self :: getInstance ( ) -> invalidateTag ( $ tag ) ; } return false ; }
docstring: Clear cache items by tag
  
  @see    TaggableCacheItemPoolInterface::invalidateTag()
  
  @param string $tag
  
  @return bool
docstring_tokens: Clear cache items by tag