Implement GuildChannel#getJumpUrl (#2204)

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

@@ -3,6 +3,7 @@
 import net.dv8tion.jda.api.JDA;
 import net.dv8tion.jda.api.managers.channel.ChannelManager;
 import net.dv8tion.jda.api.requests.restaction.AuditableRestAction;
+import net.dv8tion.jda.internal.utils.Helpers;
 
 import javax.annotation.CheckReturnValue;
 import javax.annotation.Nonnull;
@@ -18,6 +19,9 @@
  */
 public interface GuildChannel extends Channel, Comparable<GuildChannel>
 {
+    /** Template for {@link #getJumpUrl()}.*/
+    String JUMP_URL = "https://discord.com/channels/%s/%s";
+
     /**
      * Returns the {@link net.dv8tion.jda.api.entities.Guild Guild} that this GuildChannel is part of.
      *
@@ -72,4 +76,16 @@ public interface GuildChannel extends Channel, Comparable<GuildChannel>
 
     //TODO-v5: Docs
     IPermissionContainer getPermissionContainer();
+
+    /**
+     * Returns the jump-to URL for this channel. Clicking this URL in the Discord client will cause the client to
+     * jump to the specified channel.
+     *
+     * @return A String representing the jump-to URL for the channel.
+     */
+    @Nonnull
+    default String getJumpUrl()
+    {
+        return Helpers.format(JUMP_URL, getGuild().getId(), getId());
+    }
 }