Better event handling via DiscordGo's handlers

model.go

@@ -88,7 +88,6 @@ func (t *TrackInfo) UnmarshalJSON(data []byte) error {
 
 const (
 	opVoiceUpdate       = "voiceUpdate"
-	opVoiceProcessed    = "voiceProcessed"
 	opUserJoin          = "userJoin"
 	opUserLeave         = "userLeave"
 	opUserListen        = "userListen"
@@ -105,8 +104,16 @@ const (
 	eventTrackEnd       = "TrackEndEvent"
 	eventTrackException = "TrackExceptionEvent"
 	eventTrackStuck     = "TrackStuckEvent"
+	eventVoiceProcessed = "VoiceProcessedEvent"
 )
 
+// Exception is a message from the Lavalink server
+type Exception struct {
+	Message  string
+	Severity string
+	Cause    string
+}
+
 // VoiceServerUpdate is a raw Discord VOICE_SERVER_UPDATE event
 type VoiceServerUpdate struct {
 	GuildID  string `json:"guild_id"`