add additional metadata accessor

Author: ajungg

CHANGELOG.md

@@ -1,6 +1,11 @@
 # Changelog  
 All notable changes to this project will be documented in this file.
 
+## [0.14.10]
+
+### Changed
+- Added accessor to additional metadata
+
 ## [0.14.9]
 
 ### Changes

core/src/main/java/io/snabble/sdk/Snabble.java

@@ -146,10 +146,24 @@ public String getVersionName() {
      * notify the user that it will not function anymore.
      */
     public boolean isOutdatedSDK() {
+        JsonObject jsonObject = getAdditionalMetadata();
+        if (jsonObject != null) {
+            return JsonUtils.getBooleanOpt(jsonObject, "kill", false);
+        }
+
+        return false;
+    }
+
+    /** Returns additional metadata that may be provided for apps unrelated to the SDK **/
+    public JsonObject getAdditionalMetadata() {
         JsonObject jsonObject = metadataDownloader.getJsonObject();
 
-        return jsonObject.has("metadata") &&
-                JsonUtils.getBooleanOpt(jsonObject.get("metadata").getAsJsonObject(), "kill", false);
+        JsonElement jsonElement = jsonObject.get("metadata");
+        if (jsonElement != null) {
+            return jsonElement.getAsJsonObject();
+        }
+
+        return null;
     }
 
     private synchronized void readMetadata() {