Add PositionStack geocoder

1 files changed, 7 insertions, 0 deletions

diff --git a/src/main/java/org/traccar/geocoder/JsonGeocoder.java b/src/main/java/org/traccar/geocoder/JsonGeocoder.java
index ed59a1d8d..8c442def3 100644
--- a/src/main/java/org/traccar/geocoder/JsonGeocoder.java
+++ b/src/main/java/org/traccar/geocoder/JsonGeocoder.java
@@ -50,6 +50,13 @@ public abstract class JsonGeocoder implements Geocoder {
         }
     }
 
+    protected String readValue(JsonObject object, String key) {
+        if (object.containsKey(key) && !object.isNull(key)) {
+            return object.getString(key);
+        }
+        return null;
+    }
+
     private String handleResponse(
             double latitude, double longitude, JsonObject json, ReverseGeocoderCallback callback) {