upgrade to MongoDb Driver 2.18 - 2.19 seems to have some broken some tests, investigating.

IntegrationTests/Infrastructure/TestRepository.cs

@@ -23,20 +23,5 @@ namespace IntegrationTests.Infrastructure
         {
             MongoDbContext.DropCollection<TDocument>(partitionKey);
         }
-
-        /// <summary>
-        /// Gets the max of a property in a mongodb collections that is satisfying the filter.
-        /// </summary>
-        /// <typeparam name="TDocument">The document type.</typeparam>
-        /// <typeparam name="TKey">The type of the primary key.</typeparam>
-        /// <returns></returns>
-        public async Task<TDocument> GetByMaxAsync<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, object>> orderByDescending)
-            where TDocument : IDocument<TKey>
-            where TKey : System.IEquatable<TKey>
-        {
-            return await GetCollection<TDocument, TKey>().Find(Builders<TDocument>.Filter.Where(filter))
-                                                         .SortByDescending(orderByDescending)
-                                                         .FirstOrDefaultAsync();
-        }
     }
 }