diff --git a/Core/Configurations/ConfigurationBuilder.cs b/Core/Configurations/ConfigurationBuilder.cs
index e3c29ff..95ab656 100644
--- a/Core/Configurations/ConfigurationBuilder.cs
+++ b/Core/Configurations/ConfigurationBuilder.cs
@@ -23,7 +23,7 @@ namespace Core.Configurations
             {
                 provider.Build();
             }
-            //TODO: we need to come up with merge strategy
+            //TODO: we need to come up with merge strategy, right now the latest key-path dominates
 
             return new ConfigurationRoot(ConfigurationProviders);
         }
@@ -33,6 +33,14 @@ namespace Core.Configurations
     {
         List<IConfigurationProvider> _providers = [];
 
+        /// <summary>
+        /// Implements a string-based indexer for backwards compatibility with Microsoft.Extensions.Configuration.
+        /// This implementation is marked as obsolete and should be replaced with type-safe alternatives.
+        /// </summary>
+        /// <param name="key">The configuration key to retrieve.</param>
+        /// <returns>The configuration value for the specified key.</returns>
+        /// <exception cref="NotSupportedException">Thrown when attempting to set a value, as this operation is not supported.</exception>
+        [Obsolete("Use type-safe configuration methods instead")]
         public string this[string key]
         {
             get => GetConfiguration(_providers, key);
@@ -58,14 +66,10 @@ namespace Core.Configurations
 
             return value;
         }
-
-
-
     }
+
     public class ConfigurationRoot : Configuration, IConfigurationRoot
     {
-        List<IConfigurationProvider> IConfiguration.ConfigurationProviders { get; set; }
-
         public ConfigurationRoot(List<IConfigurationProvider> configurationProviders)
         {
             ((IConfiguration)this).ConfigurationProviders = configurationProviders;
diff --git a/Core/Configurations/SmartConfigProvider/SmartConfigExtension.cs b/Core/Configurations/SmartConfigProvider/SmartConfigExtension.cs
index cf32907..b63bfb0 100644
--- a/Core/Configurations/SmartConfigProvider/SmartConfigExtension.cs
+++ b/Core/Configurations/SmartConfigProvider/SmartConfigExtension.cs
@@ -8,6 +8,13 @@ namespace Core.Configurations.SmartConfig
 {
     public static class SmartConfigExtension
     {
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <param name="builder"></param>
+        /// <param name="configKey">Name of key</param>
+        /// <param name="path">If this is different than the default ConnectionStrings-element, then configure it.</param>
+        /// <returns></returns>
         public static IConfigurationBuilder AddSmartConfig(this IConfigurationBuilder builder, string configKey = "DefaultConnection", string path = null)
         {
             return builder.AddProvider(new SmartConfigProvider(builder, configKey, path));
@@ -83,7 +90,7 @@ namespace Core.Configurations.SmartConfig
             var pairs = configs.Select(x => new KeyValuePair<string, JToken>(x.Key, JToken.Parse(x.Value.ToString())));
 
             _configuration = Common.KeyValueToJson.Convert(pairs);
-             
+
         }
 
         public Newtonsoft.Json.Linq.JObject Configuration()
diff --git a/Tests/ConfigurationTests/JsonConfigurationProviderTests.cs b/Tests/ConfigurationTests/JsonConfigurationProviderTests.cs
index ab48f42..921961d 100644
--- a/Tests/ConfigurationTests/JsonConfigurationProviderTests.cs
+++ b/Tests/ConfigurationTests/JsonConfigurationProviderTests.cs
@@ -7,6 +7,7 @@ using Autofac;
 using System.Data;
 using Insight.Database;
 using Npgsql;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
 
 namespace Tests.ConfigurationTests
 {
@@ -52,7 +53,9 @@ namespace Tests.ConfigurationTests
 
             // Act
             var actualFeature = builder.GetSection("Feature").ToObject<Feature>();
+#pragma warning disable CS0618 // Type or member is obsolete
             var actualFeatureObsoleted = builder.GetSection("Feature").Get<Feature>();
+#pragma warning restore CS0618 // Type or member is obsolete
             // Assert
             actualFeature.Should().BeEquivalentTo(expectedFeature);
             actualFeatureObsoleted.Should().BeEquivalentTo(expectedFeature);
@@ -74,6 +77,25 @@ namespace Tests.ConfigurationTests
             // Assert
             actualFeature.Should().BeEquivalentTo(expectedFeature);
         }
+        /// <summary>
+        /// Testing a stupid indexer for compability with Microsoft ConfigurationBuilder
+        /// </summary>
+        [TestMethod]
+        public void Indexer_ShouldReturnValueAsString()
+        {
+            // Arrange
+            var expected = "SHA256";
+
+            var builder = new ConfigurationBuilder()
+                .AddJsonFile("appconfiguration.dev.json")
+                .Build();
+
+            // Act
+            var actual = builder["Authentication"];
+
+            // Assert
+            actual.Should().BeEquivalentTo(expected);
+        }
         [TestMethod]
         public void Get_ShouldReturnCorrectValueAsInt()
         {
diff --git a/Tests/TestFixture.cs b/Tests/TestFixture.cs
index 2aa52f8..0c9cf5a 100644
--- a/Tests/TestFixture.cs
+++ b/Tests/TestFixture.cs
@@ -35,7 +35,7 @@ namespace Tests
         {
             CreateContainerBuilder();
             Container = ContainerBuilder.Build();
-            
+
         }
 
 
@@ -69,7 +69,7 @@ namespace Tests
                 .SingleInstance();
 
 
-            builder.RegisterModule(new Core.ModuleRegistry.DbPostgreSqlModule
+            builder.RegisterModule(new Database.ModuleRegistry.DbPostgreSqlModule
             {
                 ConnectionString = configuration.GetConnectionString("DefaultConnection")
             });
@@ -86,8 +86,6 @@ namespace Tests
         [TestCleanup]
         public void CleanUp()
         {
-            //Serilog.Log.CloseAndFlush();
-
             Trace.Flush();
             var telemetryClient = Container.Resolve<TelemetryClient>();
             telemetryClient.Flush();
diff --git a/Tests/appconfiguration.dev.json b/Tests/appconfiguration.dev.json
index 79333a6..d78a92e 100644
--- a/Tests/appconfiguration.dev.json
+++ b/Tests/appconfiguration.dev.json
@@ -6,6 +6,7 @@
   "ApplicationInsights": {
     "ConnectionString": "InstrumentationKey=6d2e76ee-5343-4691-a5e3-81add43cb584;IngestionEndpoint=https://northeurope-0.in.applicationinsights.azure.com/"
   },
+  "Authentication": "SHA256",
   "Feature": {
     "Enabled": true,
     "RolloutPercentage": 25,