- A lot of bugfixes and fitting to accomodate ldap adapter

src/Adapter/AdapterInterface.php

@@ -16,4 +16,5 @@ interface AdapterInterface {
     public function setup(array $configuration) : void;
     public function escapeIdentifier(string $segment, int $type) : string;
     public function defaultEngine() : ? string;
+    public function writableValue(/* mixed */ $value) /*: mixed*/;
 }