Work on adding additional objectclasses to an entry

app/Classes/LDAP/Schema/ObjectClass.php

@@ -442,6 +442,16 @@ final class ObjectClass extends Base
 		return $this->type;
 	}
 
+	/**
+	 * Return if this objectclass is auxiliary
+	 *
+	 * @return bool
+	 */
+	public function isAuxiliary(): bool
+	{
+		return $this->type === Server::OC_AUXILIARY;
+	}
+
 	/**
 	 * Determine if an array is listed in the may_force attrs
 	 */