Add missing Invite.Guild fields

src/main/java/net/dv8tion/jda/api/entities/Guild.java

@@ -915,7 +915,8 @@ default String getVanityUrl()
 
     /**
      * The description for this guild.
-     * <br>This is displayed in the server browser below the guild name for verified guilds.
+     * <br>This is displayed in the server browser below the guild name for verified guilds,
+     * and in embedded invite links.
      *
      * <p>The description can be modified using {@link GuildManager#setDescription(String)}.
      *

src/main/java/net/dv8tion/jda/api/entities/Invite.java

@@ -31,6 +31,9 @@
 import java.util.List;
 import java.util.Set;
 
+import static net.dv8tion.jda.api.entities.Guild.BANNER_URL;
+import static net.dv8tion.jda.api.entities.Guild.NSFWLevel;
+
 /**
  * Representation of a Discord Invite.
  * This class is immutable.
@@ -358,6 +361,77 @@ interface Channel extends ISnowflake
      */
     interface Guild extends ISnowflake
     {
+        /**
+         * The vanity url code for this Guild. The vanity url is the custom invite code of partnered / official / boosted Guilds.
+         * <br>The returned String will be the code that can be provided to {@code discord.gg/{code}} to get the invite link.
+         *
+         * @return The vanity code or null
+         *
+         * @see    #getVanityUrl()
+         */
+        @Nullable
+        String getVanityCode();
+
+        /**
+         * The vanity url for this Guild. The vanity url is the custom invite code of partnered / official / boosted Guilds.
+         * <br>The returned String will be the vanity invite link to this guild.
+         *
+         * @return The vanity url or null
+         */
+        @Nullable
+        default String getVanityUrl()
+        {
+            return getVanityCode() == null ? null : "https://discord.gg/" + getVanityCode();
+        }
+
+        /**
+         * The guild banner id.
+         * <br>This is shown in guilds below the guild name.
+         *
+         * @return The guild banner id or null
+         *
+         * @see    #getBannerUrl()
+         */
+        @Nullable
+        String getBannerId();
+
+        /**
+         * The guild banner url.
+         * <br>This is shown in guilds below the guild name.
+         *
+         * @return The guild banner url or null
+         */
+        @Nullable
+        default String getBannerUrl()
+        {
+            String bannerId = getBannerId();
+            return bannerId == null ? null : String.format(BANNER_URL, getId(), bannerId, bannerId.startsWith("a_") ? "gif" : "png");
+        }
+
+        /**
+         * Returns an {@link ImageProxy} for this guild's banner image.
+         *
+         * @return Possibly-null {@link ImageProxy} of this guild's banner image
+         *
+         * @see    #getBannerUrl()
+         */
+        @Nullable
+        default ImageProxy getBanner()
+        {
+            final String bannerUrl = getBannerUrl();
+            return bannerUrl == null ? null : new ImageProxy(bannerUrl);
+        }
+
+        /**
+         * The description for this guild.
+         * <br>This is displayed in the server browser below the guild name for verified guilds,
+         * and in embedded invite links.
+         *
+         * @return The guild's description
+         */
+        @Nullable
+        String getDescription();
+
         /**
          * The icon id of this guild.
          *
@@ -441,6 +515,9 @@ default ImageProxy getSplash()
          */
         @Nonnull
         VerificationLevel getVerificationLevel();
+
+        @Nonnull
+        NSFWLevel getNSFWLevel();
 
         /**
          * Returns the approximate count of online members in the guild. If the online member count was not included in the

src/main/java/net/dv8tion/jda/internal/entities/EntityBuilder.java

@@ -2320,11 +2320,15 @@ else if (channelType.isGuild())
 
             final DataObject guildObject = object.getObject("guild");
 
+            final String guildVanityCode = guildObject.getString("vanity_url_code", null);
+            final String guildBannerId = guildObject.getString("banner", null);
             final String guildIconId = guildObject.getString("icon", null);
             final long guildId = guildObject.getLong("id");
             final String guildName = guildObject.getString("name");
             final String guildSplashId = guildObject.getString("splash", null);
+            final String description = guildObject.getString("description", null);
             final VerificationLevel guildVerificationLevel = VerificationLevel.fromKey(guildObject.getInt("verification_level", -1));
+            final Guild.NSFWLevel guildNsfwLevel = Guild.NSFWLevel.fromKey(guildObject.getInt("nsfw_level", -1));
             final int presenceCount = object.getInt("approximate_presence_count", -1);
             final int memberCount = object.getInt("approximate_member_count", -1);
 
@@ -2338,7 +2342,7 @@ else if (channelType.isGuild())
                     ? null
                     : createWelcomeScreen(null, guildObject.getObject("welcome_screen"));
 
-            guild = new InviteImpl.GuildImpl(guildId, guildIconId, guildName, guildSplashId, guildVerificationLevel, presenceCount, memberCount, guildFeatures, welcomeScreen);
+            guild = new InviteImpl.GuildImpl(guildId, guildVanityCode, guildBannerId, guildIconId, guildName, guildSplashId, description, guildVerificationLevel, guildNsfwLevel, presenceCount, memberCount, guildFeatures, welcomeScreen);
 
             final String channelName = channelObject.getString("name");
             final long channelId = channelObject.getLong("id");

src/main/java/net/dv8tion/jda/internal/entities/InviteImpl.java

@@ -41,6 +41,8 @@
 import java.util.List;
 import java.util.Set;
 
+import static net.dv8tion.jda.api.entities.Guild.NSFWLevel;
+
 public class InviteImpl implements Invite
 {
     private final JDAImpl api;
@@ -335,22 +337,27 @@ public String toString()
 
     public static class GuildImpl implements Guild
     {
-        private final String iconId, name, splashId;
+        private final String vanityCode, bannerId, iconId, name, splashId, description;
         private final int presenceCount, memberCount;
         private final long id;
         private final VerificationLevel verificationLevel;
+        private final NSFWLevel nsfwLevel;
         private final Set<String> features;
         private final GuildWelcomeScreen welcomeScreen;
 
-        public GuildImpl(final long id, final String iconId, final String name, final String splashId,
-                         final VerificationLevel verificationLevel, final int presenceCount, final int memberCount, final Set<String> features,
+        public GuildImpl(final long id, final String vanityCode, final String bannerId, final String iconId, final String name, final String splashId, final String description,
+                         final VerificationLevel verificationLevel, final NSFWLevel nsfwLevel, final int presenceCount, final int memberCount, final Set<String> features,
                          final GuildWelcomeScreen welcomeScreen)
         {
             this.id = id;
+            this.vanityCode = vanityCode;
+            this.bannerId = bannerId;
             this.iconId = iconId;
             this.name = name;
             this.splashId = splashId;
+            this.description = description;
             this.verificationLevel = verificationLevel;
+            this.nsfwLevel = nsfwLevel;
             this.presenceCount = presenceCount;
             this.memberCount = memberCount;
             this.features = features;
@@ -359,8 +366,29 @@ public GuildImpl(final long id, final String iconId, final String name, final St
 
         public GuildImpl(final net.dv8tion.jda.api.entities.Guild guild)
         {
-            this(guild.getIdLong(), guild.getIconId(), guild.getName(), guild.getSplashId(),
-                 guild.getVerificationLevel(), -1, -1, guild.getFeatures(), null);
+            this(guild.getIdLong(), guild.getVanityCode(), guild.getBannerId(), guild.getIconId(), guild.getName(), guild.getSplashId(), guild.getDescription(),
+                 guild.getVerificationLevel(), guild.getNSFWLevel(), -1, -1, guild.getFeatures(), null);
+        }
+
+        @Nullable
+        @Override
+        public String getVanityCode()
+        {
+            return vanityCode;
+        }
+
+        @Nullable
+        @Override
+        public String getBannerId()
+        {
+            return bannerId;
+        }
+
+        @Nullable
+        @Override
+        public String getDescription()
+        {
+            return description;
         }
 
         @Override
@@ -408,7 +436,14 @@ public VerificationLevel getVerificationLevel()
         {
             return verificationLevel;
         }
-
+
+        @Nonnull
+        @Override
+        public NSFWLevel getNSFWLevel()
+        {
+            return nsfwLevel;
+        }
+
         @Override
         public int getOnlineCount()
         {