Add requested changes.

Co-authored-by: TiA4f8R <74829229+TiA4f8R@users.noreply.github.com>
Add final.

Co-authored-by: TiA4f8R <74829229+TiA4f8R@users.noreply.github.com>

Author: FireMasterK

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/extractors/YoutubeStreamInfoItemExtractor.java

@@ -293,11 +293,13 @@ private OffsetDateTime getDateFromPremiere() throws ParsingException {
     @Override
     public String getShortDescription() throws ParsingException {
 
-        if(videoInfo.has("detailedMetadataSnippets"))
+        if (videoInfo.has("detailedMetadataSnippets")) {
             return getTextFromObject(videoInfo.getArray("detailedMetadataSnippets").getObject(0).getObject("snippetText"));
+        }
 
-        if(videoInfo.has("descriptionSnippet"))
-            return  getTextFromObject(videoInfo.getObject("descriptionSnippet"));
+        if (videoInfo.has("descriptionSnippet")) {
+            return getTextFromObject(videoInfo.getObject("descriptionSnippet"));
+        }
 
         return null;
     }

extractor/src/main/java/org/schabi/newpipe/extractor/stream/StreamInfoItem.java

@@ -97,7 +97,7 @@ public String getShortDescription() {
         return shortDescription;
     }
 
-    public void setShortDescription(String shortDescription) {
+    public void setShortDescription(final String shortDescription) {
         this.shortDescription = shortDescription;
     }