Fix more warnings

Emby.Server.Implementations/AppBase/BaseConfigurationManager.cs

@@ -84,6 +84,7 @@ namespace Emby.Server.Implementations.AppBase
         /// </summary>
         /// <value>The logger.</value>
         protected ILogger Logger { get; private set; }
+
         /// <summary>
         /// Gets the XML serializer.
         /// </summary>
@@ -131,6 +132,10 @@ namespace Emby.Server.Implementations.AppBase
             }
         }
 
+        /// <summary>
+        /// Adds parts.
+        /// </summary>
+        /// <param name="factories">The configuration factories.</param>
         public virtual void AddParts(IEnumerable<IConfigurationFactory> factories)
         {
             _configurationFactories = factories.ToArray();
@@ -223,7 +228,7 @@ namespace Emby.Server.Implementations.AppBase
         /// Replaces the cache path.
         /// </summary>
         /// <param name="newConfig">The new configuration.</param>
-        /// <exception cref="DirectoryNotFoundException"></exception>
+        /// <exception cref="DirectoryNotFoundException">The new cache path doesn't exist.</exception>
         private void ValidateCachePath(BaseApplicationConfiguration newConfig)
         {
             var newPath = newConfig.CachePath;
@@ -234,7 +239,7 @@ namespace Emby.Server.Implementations.AppBase
                 // Validate
                 if (!Directory.Exists(newPath))
                 {
-                    throw new FileNotFoundException(
+                    throw new DirectoryNotFoundException(
                         string.Format(
                             CultureInfo.InvariantCulture,
                             "{0} does not exist.",
@@ -245,6 +250,10 @@ namespace Emby.Server.Implementations.AppBase
             }
         }
 
+        /// <summary>
+        /// Ensures that we have write access to the path.
+        /// </summary>
+        /// <param name="path">The path.</param>
         protected void EnsureWriteAccess(string path)
         {
             var file = Path.Combine(path, Guid.NewGuid().ToString());
@@ -257,6 +266,7 @@ namespace Emby.Server.Implementations.AppBase
             return Path.Combine(CommonApplicationPaths.ConfigurationDirectoryPath, key.ToLowerInvariant() + ".xml");
         }
 
+        /// <inheritdoc />
         public object GetConfiguration(string key)
         {
             return _configurations.GetOrAdd(key, k =>
@@ -303,6 +313,7 @@ namespace Emby.Server.Implementations.AppBase
             }
         }
 
+        /// <inheritdoc />
         public void SaveConfiguration(string key, object configuration)
         {
             var configurationStore = GetConfigurationStore(key);
@@ -339,6 +350,11 @@ namespace Emby.Server.Implementations.AppBase
             OnNamedConfigurationUpdated(key, configuration);
         }
 
+        /// <summary>
+        /// Event handler for when a named configuration got updates.
+        /// </summary>
+        /// <param name="key">The key of the configuration.</param>
+        /// <param name="configuration">The old configuration.</param>
         protected virtual void OnNamedConfigurationUpdated(string key, object configuration)
         {
             NamedConfigurationUpdated?.Invoke(this, new ConfigurationUpdateEventArgs
@@ -348,6 +364,7 @@ namespace Emby.Server.Implementations.AppBase
             });
         }
 
+        /// <inheritdoc />
         public Type GetConfigurationType(string key)
         {
             return GetConfigurationStore(key)