Generify related streams calls and rename method

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

@@ -245,7 +245,7 @@ public class BandcampStreamExtractor extends StreamExtractor {
     }
 
     @Override
-    public StreamInfoItemsCollector getRelatedStreams() {
+    public StreamInfoItemsCollector getRelatedItems() {
         return null;
     }
 

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

@@ -240,7 +240,7 @@ public class MediaCCCLiveStreamExtractor extends StreamExtractor {
 
     @Nullable
     @Override
-    public StreamInfoItemsCollector getRelatedStreams() {
+    public StreamInfoItemsCollector getRelatedItems() {
         return null;
     }
 

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

@@ -219,7 +219,7 @@ public class MediaCCCStreamExtractor extends StreamExtractor {
 
     @Nullable
     @Override
-    public StreamInfoItemsCollector getRelatedStreams() {
+    public StreamInfoItemsCollector getRelatedItems() {
         return null;
     }
 

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

@@ -263,7 +263,7 @@ public class PeertubeStreamExtractor extends StreamExtractor {
 
     @Nullable
     @Override
-    public StreamInfoItemsCollector getRelatedStreams() throws IOException, ExtractionException {
+    public StreamInfoItemsCollector getRelatedItems() throws IOException, ExtractionException {
         final List<String> tags = getTags();
         final String apiUrl;
         if (tags.isEmpty()) {
@@ -271,7 +271,7 @@ public class PeertubeStreamExtractor extends StreamExtractor {
                     + "@" + JsonUtils.getString(json, "account.host") +
                     "/videos?start=0&count=8";
         } else {
-            apiUrl = getRelatedStreamsUrl(tags);
+            apiUrl = getRelatedItemsUrl(tags);
         }
 
         if (Utils.isBlank(apiUrl)) {
@@ -311,7 +311,7 @@ public class PeertubeStreamExtractor extends StreamExtractor {
         return Collections.emptyList();
     }
 
-    private String getRelatedStreamsUrl(final List<String> tags) throws UnsupportedEncodingException {
+    private String getRelatedItemsUrl(final List<String> tags) throws UnsupportedEncodingException {
         final String url = baseUrl + PeertubeSearchQueryHandlerFactory.SEARCH_ENDPOINT;
         final StringBuilder params = new StringBuilder();
         params.append("start=0&count=8&sort=-createdAt");

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

@@ -353,7 +353,7 @@ public class SoundcloudStreamExtractor extends StreamExtractor {
 
     @Nullable
     @Override
-    public StreamInfoItemsCollector getRelatedStreams() throws IOException, ExtractionException {
+    public StreamInfoItemsCollector getRelatedItems() throws IOException, ExtractionException {
         final StreamInfoItemsCollector collector = new StreamInfoItemsCollector(getServiceId());
 
         final String apiUrl = "https://api-v2.soundcloud.com/tracks/" + urlEncode(getId())

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

@@ -643,7 +643,7 @@ public class YoutubeStreamExtractor extends StreamExtractor {
 
     @Nullable
     @Override
-    public StreamInfoItemsCollector getRelatedStreams() throws ExtractionException {
+    public StreamInfoItemsCollector getRelatedItems() throws ExtractionException {
         assertPageFetched();
 
         if (getAgeLimit() != NO_AGE_LIMIT) {

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

@@ -20,6 +20,9 @@ package org.schabi.newpipe.extractor.stream;
  * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+import org.schabi.newpipe.extractor.InfoItem;
+import org.schabi.newpipe.extractor.InfoItemsCollector;
+import org.schabi.newpipe.extractor.InfoItemExtractor;
 import org.schabi.newpipe.extractor.Extractor;
 import org.schabi.newpipe.extractor.MediaFormat;
 import org.schabi.newpipe.extractor.MetaInfo;
@@ -331,7 +334,8 @@ public abstract class StreamExtractor extends Extractor {
      * @throws ExtractionException
      */
     @Nullable
-    public abstract StreamInfoItemsCollector getRelatedStreams() throws IOException, ExtractionException;
+    public abstract InfoItemsCollector<? extends InfoItem, ? extends InfoItemExtractor>
+    getRelatedItems() throws IOException, ExtractionException;
 
     /**
      * Should return a list of Frameset object that contains preview of stream frames

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

@@ -334,7 +334,7 @@ public class StreamInfo extends Info {
             streamInfo.addError(e);
         }
 
-        streamInfo.setRelatedStreams(ExtractorHelper.getRelatedVideosOrLogError(streamInfo, extractor));
+        streamInfo.setRelatedItems(ExtractorHelper.getRelatedItemsOrLogError(streamInfo, extractor));
 
         return streamInfo;
     }
@@ -370,7 +370,7 @@ public class StreamInfo extends Info {
 
 
     private String hlsUrl = "";
-    private List<InfoItem> relatedStreams = new ArrayList<>();
+    private List<InfoItem> relatedItems = new ArrayList<>();
 
     private long startPosition = 0;
     private List<SubtitlesStream> subtitles = new ArrayList<>();
@@ -602,12 +602,12 @@ public class StreamInfo extends Info {
         this.hlsUrl = hlsUrl;
     }
 
-    public List<InfoItem> getRelatedStreams() {
+    public List<InfoItem> getRelatedItems() {
-        return relatedStreams;
+        return relatedItems;
     }
 
-    public void setRelatedStreams(List<InfoItem> relatedStreams) {
+    public void setRelatedItems(List<InfoItem> relatedItems) {
-        this.relatedStreams = relatedStreams;
+        this.relatedItems = relatedItems;
     }
 
     public long getStartPosition() {

extractor/src/main/java/org/schabi/newpipe/extractor/utils/ExtractorHelper.java

@@ -27,9 +27,9 @@ public class ExtractorHelper {
     }
 
 
-    public static List<InfoItem> getRelatedVideosOrLogError(StreamInfo info, StreamExtractor extractor) {
+    public static List<InfoItem> getRelatedItemsOrLogError(StreamInfo info, StreamExtractor extractor) {
         try {
-            InfoItemsCollector<? extends InfoItem, ?> collector = extractor.getRelatedStreams();
+            InfoItemsCollector<? extends InfoItem, ?> collector = extractor.getRelatedItems();
             if (collector == null) return Collections.emptyList();
             info.addAllErrors(collector.getErrors());
 

extractor/src/test/java/org/schabi/newpipe/extractor/services/BaseStreamExtractorTest.java

@@ -17,7 +17,7 @@ public interface BaseStreamExtractorTest extends BaseExtractorTest {
     void testTextualUploadDate() throws Exception;
     void testLikeCount() throws Exception;
     void testDislikeCount() throws Exception;
-    void testRelatedStreams() throws Exception;
+    void testRelatedItems() throws Exception;
     void testAgeLimit() throws Exception;
     void testErrorMessage() throws Exception;
     void testAudioStreams() throws Exception;

extractor/src/test/java/org/schabi/newpipe/extractor/services/DefaultStreamExtractorTest.java

@@ -1,6 +1,7 @@
 package org.schabi.newpipe.extractor.services;
 
 import org.junit.Test;
+import org.schabi.newpipe.extractor.InfoItemsCollector;
 import org.schabi.newpipe.extractor.MediaFormat;
 import org.schabi.newpipe.extractor.MetaInfo;
 import org.schabi.newpipe.extractor.localization.DateWrapper;
@@ -8,7 +9,6 @@ import org.schabi.newpipe.extractor.stream.AudioStream;
 import org.schabi.newpipe.extractor.stream.Description;
 import org.schabi.newpipe.extractor.stream.Frameset;
 import org.schabi.newpipe.extractor.stream.StreamExtractor;
-import org.schabi.newpipe.extractor.stream.StreamInfoItemsCollector;
 import org.schabi.newpipe.extractor.stream.StreamType;
 import org.schabi.newpipe.extractor.stream.SubtitlesStream;
 import org.schabi.newpipe.extractor.stream.VideoStream;
@@ -57,7 +57,7 @@ public abstract class DefaultStreamExtractorTest extends DefaultExtractorTest<St
     @Nullable public abstract String expectedTextualUploadDate();
     public abstract long expectedLikeCountAtLeast(); // return -1 if ratings are disabled
     public abstract long expectedDislikeCountAtLeast(); // return -1 if ratings are disabled
-    public boolean expectedHasRelatedStreams() { return true; } // default: there are related videos
+    public boolean expectedHasRelatedItems() { return true; } // default: there are related videos
     public int expectedAgeLimit() { return StreamExtractor.NO_AGE_LIMIT; } // default: no limit
     @Nullable public String expectedErrorMessage() { return null; } // default: no error message
     public boolean expectedHasVideoStreams() { return true; } // default: there are video streams
@@ -223,10 +223,10 @@ public abstract class DefaultStreamExtractorTest extends DefaultExtractorTest<St
 
     @Test
     @Override
-    public void testRelatedStreams() throws Exception {
+    public void testRelatedItems() throws Exception {
-        final StreamInfoItemsCollector relatedStreams = extractor().getRelatedStreams();
+        final InfoItemsCollector<?, ?> relatedStreams = extractor().getRelatedItems();
 
-        if (expectedHasRelatedStreams()) {
+        if (expectedHasRelatedItems()) {
             assertNotNull(relatedStreams);
             defaultTestListOfItems(extractor().getService(), relatedStreams.getItems(),
                     relatedStreams.getErrors());

extractor/src/test/java/org/schabi/newpipe/extractor/services/bandcamp/BandcampRadioStreamExtractorTest.java

@@ -50,7 +50,7 @@ public class BandcampRadioStreamExtractorTest extends DefaultStreamExtractorTest
     @Override public boolean expectedHasVideoStreams() { return false; }
     @Override public boolean expectedHasSubtitles() { return false; }
     @Override public boolean expectedHasFrames() { return false; }
-    @Override public boolean expectedHasRelatedStreams() { return false; }
+    @Override public boolean expectedHasRelatedItems() { return false; }
     @Override public StreamType expectedStreamType() { return StreamType.AUDIO_STREAM; }
     @Override public StreamingService expectedService() { return Bandcamp; }
     @Override public String expectedUploaderName() { return "Andrew Jervis"; }

extractor/src/test/java/org/schabi/newpipe/extractor/services/bandcamp/BandcampStreamExtractorTest.java

@@ -125,7 +125,7 @@ public class BandcampStreamExtractorTest extends DefaultStreamExtractorTest {
     }
 
     @Override
-    public boolean expectedHasRelatedStreams() {
+    public boolean expectedHasRelatedItems() {
         return false;
     }
 

extractor/src/test/java/org/schabi/newpipe/extractor/services/media_ccc/MediaCCCStreamExtractorTest.java

@@ -54,7 +54,7 @@ public class MediaCCCStreamExtractorTest {
         @Nullable @Override public String expectedTextualUploadDate() { return "2018-05-11T02:00:00.000+02:00"; }
         @Override public long expectedLikeCountAtLeast() { return -1; }
         @Override public long expectedDislikeCountAtLeast() { return -1; }
-        @Override public boolean expectedHasRelatedStreams() { return false; }
+        @Override public boolean expectedHasRelatedItems() { return false; }
         @Override public boolean expectedHasSubtitles() { return false; }
         @Override public boolean expectedHasFrames() { return false; }
         @Override public List<String> expectedTags() { return Arrays.asList("gpn18", "105"); }
@@ -125,7 +125,7 @@ public class MediaCCCStreamExtractorTest {
         @Nullable @Override public String expectedTextualUploadDate() { return "2020-01-11T01:00:00.000+01:00"; }
         @Override public long expectedLikeCountAtLeast() { return -1; }
         @Override public long expectedDislikeCountAtLeast() { return -1; }
-        @Override public boolean expectedHasRelatedStreams() { return false; }
+        @Override public boolean expectedHasRelatedItems() { return false; }
         @Override public boolean expectedHasSubtitles() { return false; }
         @Override public boolean expectedHasFrames() { return false; }
         @Override public List<String> expectedTags() { return Arrays.asList("36c3", "10565", "2019", "Security", "Main"); }

extractor/src/test/java/org/schabi/newpipe/extractor/services/soundcloud/SoundcloudStreamExtractorTest.java

@@ -70,7 +70,7 @@ public class SoundcloudStreamExtractorTest {
         @Override public boolean expectedHasSubtitles() { return false; }
         @Override public boolean expectedHasFrames() { return false; }
         @Override public int expectedStreamSegmentsCount() { return 0; }
-        @Override public boolean expectedHasRelatedStreams() { return false; }
+        @Override public boolean expectedHasRelatedItems() { return false; }
         @Override public String expectedLicence() { return "all-rights-reserved"; }
         @Override public String expectedCategory() { return "Pop"; }
     }
@@ -115,7 +115,7 @@ public class SoundcloudStreamExtractorTest {
         @Override public long expectedDislikeCountAtLeast() { return -1; }
         @Override public boolean expectedHasAudioStreams() { return false; }
         @Override public boolean expectedHasVideoStreams() { return false; }
-        @Override public boolean expectedHasRelatedStreams() { return false; }
+        @Override public boolean expectedHasRelatedItems() { return false; }
         @Override public boolean expectedHasSubtitles() { return false; }
         @Override public boolean expectedHasFrames() { return false; }
         @Override public int expectedStreamSegmentsCount() { return 0; }

extractor/src/test/java/org/schabi/newpipe/extractor/services/youtube/stream/YoutubeStreamExtractorAgeRestrictedTest.java

@@ -50,7 +50,7 @@ public class YoutubeStreamExtractorAgeRestrictedTest extends DefaultStreamExtrac
     @Nullable @Override public String expectedTextualUploadDate() { return "2017-01-25"; }
     @Override public long expectedLikeCountAtLeast() { return 149000; }
     @Override public long expectedDislikeCountAtLeast() { return 38000; }
-    @Override public boolean expectedHasRelatedStreams() { return false; } // no related videos (!)
+    @Override public boolean expectedHasRelatedItems() { return false; } // no related videos (!)
     @Override public int expectedAgeLimit() { return 18; }
     @Nullable @Override public String expectedErrorMessage() { return "Sign in to confirm your age"; }
     @Override public boolean expectedHasSubtitles() { return false; }