From 8bde0643c4a9f391a53c2473b1a3e16bae34cd31 Mon Sep 17 00:00:00 2001
From: "Johnny @PC" <johnny@johnnycrazy.de>
Date: Tue, 24 May 2016 18:30:19 +0200
Subject: [PATCH] Added alternative way to get the next page

---
 SpotifyAPI/Web/SpotifyWebAPI.cs | 38 +++++++++++++++++++++++++--------
 1 file changed, 29 insertions(+), 9 deletions(-)

diff --git a/SpotifyAPI/Web/SpotifyWebAPI.cs b/SpotifyAPI/Web/SpotifyWebAPI.cs
index c7902e7e..ad1b56b5 100644
--- a/SpotifyAPI/Web/SpotifyWebAPI.cs
+++ b/SpotifyAPI/Web/SpotifyWebAPI.cs
@@ -1767,32 +1767,52 @@ namespace SpotifyAPI.Web
 
         #region Util
 
-        public Paging<T> GetNextPage<T>(Paging<T> paging)
+        public TOut GetNextPage<TOut, TIn>(Paging<TIn> paging)
         {
             if (!paging.HasNextPage())
                 throw new InvalidOperationException("This Paging-Object has no Next-Page");
-            return DownloadData<Paging<T>>(paging.Next);
+            return DownloadData<TOut>(paging.Next);
+        }
+
+        public Paging<T> GetNextPage<T>(Paging<T> paging)
+        {
+            return GetNextPage<Paging<T>, T>(paging);
+        }
+
+        public async Task<TOut> GetNextPageAsync<TOut, TIn>(Paging<TIn> paging)
+        {
+            if (!paging.HasNextPage())
+                throw new InvalidOperationException("This Paging-Object has no Next-Page");
+            return await DownloadDataAsync<TOut>(paging.Next);
         }
 
         public async Task<Paging<T>> GetNextPageAsync<T>(Paging<T> paging)
         {
-            if (!paging.HasNextPage())
-                throw new InvalidOperationException("This Paging-Object has no Next-Page");
-            return await DownloadDataAsync<Paging<T>>(paging.Next);
+            return await GetNextPageAsync<Paging<T>, T>(paging);
+        }
+
+        public TOut GetPreviousPage<TOut, TIn>(Paging<TIn> paging)
+        {
+            if (!paging.HasPreviousPage())
+                throw new InvalidOperationException("This Paging-Object has no Previous-Page");
+            return DownloadData<TOut>(paging.Previous);
         }
 
         public Paging<T> GetPreviousPage<T>(Paging<T> paging)
+        {
+            return GetPreviousPage<Paging<T>, T>(paging);
+        }
+
+        public async Task<TOut> GetPreviousPageAsync<TOut, TIn>(Paging<TIn> paging)
         {
             if (!paging.HasPreviousPage())
                 throw new InvalidOperationException("This Paging-Object has no Previous-Page");
-            return DownloadData<Paging<T>>(paging.Previous);
+            return await DownloadDataAsync<TOut>(paging.Previous);
         }
 
         public async Task<Paging<T>> GetPreviousPageAsync<T>(Paging<T> paging)
         {
-            if (!paging.HasPreviousPage())
-                throw new InvalidOperationException("This Paging-Object has no Previous-Page");
-            return await DownloadDataAsync<Paging<T>>(paging.Previous);
+            return await GetPreviousPageAsync<Paging<T>, T>(paging);
         }
 
         public T UploadData<T>(string url, string uploadData, string method = "POST")