Update plugin.js

src/plugins/sessionPlayer/plugin.js

@@ -450,6 +450,9 @@ class SessionPlayer {
         });
     }
 
+    getRepeatMode() {
+    }
+
     setQueueShuffleMode(mode) {
         sendCommandByName(this, 'SetShuffleQueue', {
             ShuffleMode: mode
@@ -484,6 +487,9 @@ class SessionPlayer {
         return Promise.resolve([]);
     }
 
+    getCurrentPlaylistItemId() {
+    }
+
     setCurrentPlaylistItem(playlistItemId) {
         return Promise.resolve();
     }