Add default implementation for getShortDescription.

extractor/src/main/java/org/schabi/newpipe/extractor/services/bandcamp/extractors/BandcampRadioInfoItemExtractor.java

@@ -43,12 +43,6 @@ public class BandcampRadioInfoItemExtractor implements StreamInfoItemExtractor {
         return BandcampExtractorHelper.parseDate(getTextualUploadDate());
     }
 
-    @Nullable
-    @Override
-    public String getShortDescription() {
-        return null;
-    }
-
     @Override
     public String getName() throws ParsingException {
         return show.getString("subtitle");

extractor/src/main/java/org/schabi/newpipe/extractor/services/bandcamp/extractors/streaminfoitem/BandcampDiscographStreamInfoItemExtractor.java

@@ -26,12 +26,6 @@ public class BandcampDiscographStreamInfoItemExtractor extends BandcampStreamInf
         return null;
     }
 
-    @Nullable
-    @Override
-    public String getShortDescription() {
-        return null;
-    }
-
     @Override
     public String getName() {
         return discograph.getString("title");

extractor/src/main/java/org/schabi/newpipe/extractor/services/bandcamp/extractors/streaminfoitem/BandcampPlaylistStreamInfoItemExtractor.java

@@ -60,12 +60,6 @@ public class BandcampPlaylistStreamInfoItemExtractor extends BandcampStreamInfoI
         return null;
     }
 
-    @Nullable
-    @Override
-    public String getShortDescription() {
-        return null;
-    }
-
     /**
      * Each track can have its own cover art. Therefore, unless a substitute is provided,
      * the thumbnail is extracted using a stream extractor.

extractor/src/main/java/org/schabi/newpipe/extractor/services/bandcamp/extractors/streaminfoitem/BandcampSearchStreamInfoItemExtractor.java

@@ -32,12 +32,6 @@ public class BandcampSearchStreamInfoItemExtractor extends BandcampStreamInfoIte
         return null;
     }
 
-    @Nullable
-    @Override
-    public String getShortDescription() {
-        return null;
-    }
-
     @Override
     public String getName() throws ParsingException {
         return resultInfo.getElementsByClass("heading").text();

extractor/src/main/java/org/schabi/newpipe/extractor/services/media_ccc/extractors/MediaCCCLiveStreamKioskExtractor.java

@@ -95,10 +95,4 @@ public class MediaCCCLiveStreamKioskExtractor implements StreamInfoItemExtractor
     public DateWrapper getUploadDate() throws ParsingException {
         return null;
     }
-
-    @Nullable
-    @Override
-    public String getShortDescription() {
-        return null;
-    }
 }

extractor/src/main/java/org/schabi/newpipe/extractor/services/media_ccc/extractors/MediaCCCRecentKioskExtractor.java

@@ -92,10 +92,4 @@ public class MediaCCCRecentKioskExtractor implements StreamInfoItemExtractor {
                 DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSSzzzz"));
         return new DateWrapper(zonedDateTime.toOffsetDateTime(), false);
     }
-
-    @Nullable
-    @Override
-    public String getShortDescription() {
-        return null;
-    }
 }

extractor/src/main/java/org/schabi/newpipe/extractor/services/media_ccc/extractors/infoItems/MediaCCCStreamInfoItemExtractor.java

@@ -73,12 +73,6 @@ public class MediaCCCStreamInfoItemExtractor implements StreamInfoItemExtractor
         return new DateWrapper(MediaCCCParsingHelper.parseDateFrom(date));
     }
 
-    @Nullable
-    @Override
-    public String getShortDescription() {
-        return null;
-    }
-
     @Override
     public String getName() throws ParsingException {
         return event.getString("title");

extractor/src/main/java/org/schabi/newpipe/extractor/services/peertube/extractors/PeertubeStreamInfoItemExtractor.java

@@ -92,12 +92,6 @@ public class PeertubeStreamInfoItemExtractor implements StreamInfoItemExtractor
         return new DateWrapper(PeertubeParsingHelper.parseDateFrom(textualUploadDate));
     }
 
-    @Nullable
-    @Override
-    public String getShortDescription() {
-        return null;
-    }
-
     @Override
     public StreamType getStreamType() {
         return item.getBoolean("isLive") ? StreamType.LIVE_STREAM : StreamType.VIDEO_STREAM;

extractor/src/main/java/org/schabi/newpipe/extractor/services/soundcloud/extractors/SoundcloudStreamInfoItemExtractor.java

@@ -66,12 +66,6 @@ public class SoundcloudStreamInfoItemExtractor implements StreamInfoItemExtracto
         return new DateWrapper(SoundcloudParsingHelper.parseDateFrom(getTextualUploadDate()));
     }
 
-    @Nullable
-    @Override
-    public String getShortDescription() {
-        return null;
-    }
-
     @Override
     public long getViewCount() {
         return itemObject.getLong("playback_count");

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

@@ -77,12 +77,6 @@ public class YoutubeFeedInfoItemExtractor implements StreamInfoItemExtractor {
         }
     }
 
-    @Nullable
-    @Override
-    public String getShortDescription() {
-        return null;
-    }
-
     @Override
     public String getName() {
         return entryElement.getElementsByTag("title").first().text();

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

@@ -124,6 +124,6 @@ public interface StreamInfoItemExtractor extends InfoItemExtractor {
      * @throws ParsingException if there is an error in the extraction
      */
     @Nullable
-    String getShortDescription() throws ParsingException;
+    default String getShortDescription() throws ParsingException { return null; }
 
 }