diff -r 2fef8007c2b2 -r 20071981ba2a server/src/app/Services/GeonamesResolverInterface.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/server/src/app/Services/GeonamesResolverInterface.php	Tue Sep 27 23:43:29 2016 +0200
@@ -0,0 +1,20 @@
+<?php
+namespace CorpusParole\Services;
+
+interface GeonamesResolverInterface {
+
+    /**
+     * Get label from Geonames id
+     * @param string $id The id to resolve. Can be an url starting with http(s)://(wwww|sws).geonames.org
+     * @return a string with the label
+     */
+    public function getLabel($id);
+
+    /**
+     * Get a list of labels from an array of geonames ids.
+     * @param array $ids The array of ids to resolve.
+     *                   Each id can be an url starting with http(s)://(wwww|sws).geonames.org
+     */
+    public function getLabels(array $ids);
+
+}