Fix missing imports and Checkstyle issues

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/YoutubeParsingHelper.java

@@ -589,7 +589,8 @@ public final class YoutubeParsingHelper {
                     INNERTUBE_CONTEXT_CLIENT_VERSION_REGEXES, 1);
             key = getStringResultFromRegexArray(response, INNERTUBE_API_KEY_REGEXES, 1);
         } catch (final Parser.RegexException e) {
-            throw new ParsingException("Could not extract YouTube WEB InnerTube client version and API key from sw.js", e);
+            throw new ParsingException("Could not extract YouTube WEB InnerTube client version "
+                    + "and API key from sw.js", e);
         }
         keyAndVersionExtracted = true;
     }
@@ -649,8 +650,8 @@ public final class YoutubeParsingHelper {
         try {
             key = getStringResultFromRegexArray(html, INNERTUBE_API_KEY_REGEXES, 1);
         } catch (final Parser.RegexException e) {
-            throw new ParsingException(
+            throw new ParsingException("Could not extract YouTube WEB InnerTube client version "
-                    "Could not extract YouTube WEB InnerTube client version and API key from HTML search results page", e);
+                    + "and API key from HTML search results page", e);
         }
         keyAndVersionExtracted = true;
     }
@@ -823,7 +824,7 @@ public final class YoutubeParsingHelper {
             musicClientName = Parser.matchGroup1(INNERTUBE_CLIENT_NAME_REGEX, html);
         }
 
-        youtubeMusicKey = new String[] { musicKey, musicClientName, musicClientVersion };
+        youtubeMusicKey = new String[] {musicKey, musicClientName, musicClientVersion};
         return youtubeMusicKey;
     }
 
@@ -1050,7 +1051,7 @@ public final class YoutubeParsingHelper {
             final byte[] body,
             @Nonnull final Localization localization,
             @Nonnull final String userAgent,
-            @Nonnull final String key,
+            @Nonnull final String innerTubeApiKey,
             @Nullable final String endPartOfUrlRequest) throws IOException, ExtractionException {
         final Map<String, List<String>> headers = new HashMap<>();
         headers.put("Content-Type", Collections.singletonList("application/json"));
@@ -1058,7 +1059,7 @@ public final class YoutubeParsingHelper {
         headers.put("X-Goog-Api-Format-Version", Collections.singletonList("2"));
 
         final String baseEndpointUrl = "https://youtubei.googleapis.com/youtubei/v1/" + endpoint
-                + "?key=" + key + DISABLE_PRETTY_PRINT_PARAMETER;
+                + "?key=" + innerTubeApiKey + DISABLE_PRETTY_PRINT_PARAMETER;
 
         final Response response = getDownloader().post(isNullOrEmpty(endPartOfUrlRequest)
                         ? baseEndpointUrl : baseEndpointUrl + endPartOfUrlRequest,
@@ -1363,6 +1364,7 @@ public final class YoutubeParsingHelper {
      * @see #CONSENT_COOKIE
      * @param headers the headers which should be completed
      */
+    @SuppressWarnings("ArraysAsListWithZeroOrOneArgument")
     public static void addCookieHeader(@Nonnull final Map<String, List<String>> headers) {
         if (headers.get("Cookie") == null) {
             headers.put("Cookie", Arrays.asList(generateConsentCookie()));

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

@@ -1,5 +1,6 @@
 package org.schabi.newpipe.extractor.services.youtube.extractors;
 
+import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.DISABLE_PRETTY_PRINT_PARAMETER;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.YOUTUBEI_V1_URL;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.addClientInfoHeaders;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.fixThumbnailUrl;

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

@@ -1,5 +1,6 @@
 package org.schabi.newpipe.extractor.services.youtube.extractors;
 
+import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.DISABLE_PRETTY_PRINT_PARAMETER;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.YOUTUBEI_V1_URL;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.addClientInfoHeaders;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.extractCookieValue;

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

@@ -1,5 +1,6 @@
 package org.schabi.newpipe.extractor.services.youtube.extractors;
 
+import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.DISABLE_PRETTY_PRINT_PARAMETER;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.fixThumbnailUrl;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getTextFromObject;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getUrlFromNavigationEndpoint;

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

@@ -1,5 +1,6 @@
 package org.schabi.newpipe.extractor.services.youtube.extractors;
 
+import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.DISABLE_PRETTY_PRINT_PARAMETER;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.YOUTUBEI_V1_URL;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.addClientInfoHeaders;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.extractPlaylistTypeFromPlaylistUrl;

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

@@ -1,5 +1,6 @@
 package org.schabi.newpipe.extractor.services.youtube.extractors;
 
+import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.DISABLE_PRETTY_PRINT_PARAMETER;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.YOUTUBEI_V1_URL;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getJsonPostResponse;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getKey;

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

@@ -1079,7 +1079,8 @@ public class YoutubeStreamExtractor extends StreamExtractor {
         }
     }
 
-    private static String getDeobfuscationFuncName(final String thePlayerCode) throws DeobfuscateException {
+    private static String getDeobfuscationFuncName(final String thePlayerCode)
+            throws DeobfuscateException {
         Parser.RegexException exception = null;
         for (final String regex : REGEXES) {
             try {

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

@@ -17,7 +17,8 @@ public final class RandomStringFromAlphabetGenerator {
      *
      * @param alphabet the characters' alphabet to use
      * @param length   the length of the returned string (> 0)
-     * @param random   {@link Random} (or better {@link java.security.SecureRandom}) used for generating the random string
+     * @param random   {@link Random} (or better {@link java.security.SecureRandom}) used for
+     *                 generating the random string
      * @return a random string of the requested length made of only characters from the provided
      * alphabet
      */

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

@@ -282,7 +282,7 @@ public final class Utils {
      * @param map the {@link Map map} on which check if it's null or empty
      * @return whether the {@link Map map} is null or empty
      */
-    public static <K,V> boolean isNullOrEmpty(final Map<K, V> map) {
+    public static <K, V> boolean isNullOrEmpty(final Map<K, V> map) {
         return map == null || map.isEmpty();
     }