Fix psalm issues

Author: tvdijen

lib/Connector/Ldap.php

@@ -8,8 +8,10 @@
 use SimpleSAML\Error;
 use SimpleSAML\Logger;
 use SimpleSAML\Module\ldap\ConnectorInterface;
+use Symfony\Component\Ldap\Adapter\AdapterInterface;
 use Symfony\Component\Ldap\Adapter\ExtLdap\Adapter;
 use Symfony\Component\Ldap\Entry;
+use Symfony\Component\Ldap\Exception\LdapException;
 use Symfony\Component\Ldap\Exception\InvalidCredentialsException;
 use Symfony\Component\Ldap\Ldap as LdapObject;
 
@@ -26,9 +28,9 @@ class Ldap implements ConnectorInterface
     use LdapHelpers;
 
     /**
-     * @var \Symfony\Component\Ldap\Adapter
+     * @var \Symfony\Component\Ldap\Adapter\AdapterInterface
      */
-    protected Adapter $adapter;
+    protected AdapterInterface $adapter;
 
     /**
      * @var \Symfony\Component\Ldap\Ldap
@@ -82,9 +84,9 @@ public function __construct(
 
 
     /**
-     * @return \Symfony\Component\Ldap\Adapter
+     * @return \Symfony\Component\Ldap\Adapter\AdapterInterface
      */
-    public function getAdapter(): Adapter
+    public function getAdapter(): AdapterInterface
     {
         return $this->adapter;
     }

lib/ConnectorInterface.php

@@ -2,6 +2,7 @@
 
 namespace SimpleSAML\Module\ldap;
 
+use Symfony\Component\Ldap\Adapter\AdapterInterface;
 use Symfony\Component\Ldap\Entry;
 
 interface ConnectorInterface
@@ -59,4 +60,10 @@ public function searchForMultiple(
         array $options,
         bool $allowMissing
     ): array;
+
+
+    /**
+     * @return \Symfony\Component\Ldap\Adapter\AdapterInterface
+     */
+    public function getAdapter(): AdapterInterface;
 }