rename slidingexpiration to match what's used in asp net

src/Microsoft.Identity.Web/TokenCacheProviders/InMemory/MsalMemoryTokenCacheOptions.cs

@@ -14,7 +14,7 @@ public class MsalMemoryTokenCacheOptions
         /// By default, the sliding expiration is set for 14 days.</summary>
         public MsalMemoryTokenCacheOptions()
         {
-            SlidingExpiration = TimeSpan.FromDays(14);
+            AbsoluteExpirationRelativeToNow = TimeSpan.FromDays(14);
         }
 
         /// <summary>
@@ -23,12 +23,12 @@ public MsalMemoryTokenCacheOptions()
         /// In production, a higher value, up-to 90 days is recommended.
         /// </summary>
         /// <value>
-        /// The SlidingExpiration value.
+        /// The AbsoluteExpirationRelativeToNow value.
         /// </value>
-        public TimeSpan SlidingExpiration
+        public TimeSpan AbsoluteExpirationRelativeToNow
         {
             get;
             set;
         }
     }
-}
+}

src/Microsoft.Identity.Web/TokenCacheProviders/InMemory/MsalMemoryTokenCacheProvider.cs

@@ -77,7 +77,7 @@ protected override Task<byte[]> ReadCacheBytesAsync(string cacheKey)
         /// <param name="bytes">Bytes to write.</param>
         protected override Task WriteCacheBytesAsync(string cacheKey, byte[] bytes)
         {
-            _memoryCache.Set(cacheKey, bytes, _cacheOptions.SlidingExpiration);
+            _memoryCache.Set(cacheKey, bytes, _cacheOptions.AbsoluteExpirationRelativeToNow);
             return Task.CompletedTask;
         }
     }

tests/Microsoft.Identity.Web.Test.Common/TestHelpers/MsalTestTokenCacheProvider.cs

@@ -44,7 +44,7 @@ protected override Task RemoveKeyAsync(string cacheKey)
 
         protected override Task WriteCacheBytesAsync(string cacheKey, byte[] bytes)
         {
-            MemoryCache.Set(cacheKey, bytes, _cacheOptions.SlidingExpiration);
+            MemoryCache.Set(cacheKey, bytes, _cacheOptions.AbsoluteExpirationRelativeToNow);
             Count++;
             return Task.CompletedTask;
         }