Bandcamp: Implement new methods required due to interface changes

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

@@ -76,6 +76,21 @@ public class BandcampChannelExtractor extends ChannelExtractor {
         return channelInfo.getString("bio");
     }
 
+    @Override
+    public String getParentChannelName() {
+        return null;
+    }
+
+    @Override
+    public String getParentChannelUrl() {
+        return null;
+    }
+
+    @Override
+    public String getParentChannelAvatarUrl() {
+        return null;
+    }
+
     @Nonnull
     @Override
     public InfoItemsPage<StreamInfoItem> getInitialPage() throws ParsingException {

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

@@ -101,6 +101,24 @@ public class BandcampPlaylistExtractor extends PlaylistExtractor {
         return trackInfo.size();
     }
 
+    @Nonnull
+    @Override
+    public String getSubChannelName() {
+        return "";
+    }
+
+    @Nonnull
+    @Override
+    public String getSubChannelUrl() {
+        return "";
+    }
+
+    @Nonnull
+    @Override
+    public String getSubChannelAvatarUrl() {
+        return "";
+    }
+
     @Nonnull
     @Override
     public InfoItemsPage<StreamInfoItem> getInitialPage() throws ExtractionException {

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

@@ -30,6 +30,11 @@ public class BandcampSearchExtractor extends SearchExtractor {
         return null;
     }
 
+    @Override
+    public boolean isCorrectedSearch() {
+        return false;
+    }
+
     @Override
     public InfoItemsPage<InfoItem> getPage(String pageUrl) throws IOException, ExtractionException {
         // okay apparently this is where we DOWNLOAD the page and then COMMIT its ENTRIES to an INFOITEMPAGE

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

@@ -122,6 +122,24 @@ public class BandcampStreamExtractor extends StreamExtractor {
         }
     }
 
+    @Nonnull
+    @Override
+    public String getSubChannelUrl() {
+        return "";
+    }
+
+    @Nonnull
+    @Override
+    public String getSubChannelName() {
+        return "";
+    }
+
+    @Nonnull
+    @Override
+    public String getSubChannelAvatarUrl() {
+        return "";
+    }
+
     @Nonnull
     @Override
     public Description getDescription() {