Fix missing import

src/HAB/Solr/Facet/Value/Container/PathFactory/AlphabrowsePathFactory.php

@@ -23,6 +23,8 @@
 
 namespace HAB\Solr\Facet\Value\Container\PathFactory;
 
+use HAB\Solr\Facet\Value\FacetValue;
+
 use SplObjectStorage;
 use Normalizer;
 
@@ -115,4 +117,4 @@ class AlphabrowsePathFactory implements PathFactoryInterface
         }
         return array();
     }
-}
\ No newline at end of file
+}