Add usual level control params to WriteTo.Providers()

Author: nblumhardt

src/Serilog.Extensions.Logging/LoggerSinkConfigurationExtensions.cs

@@ -14,6 +14,8 @@
 
 using System;
 using Serilog.Configuration;
+using Serilog.Core;
+using Serilog.Events;
 using Serilog.Extensions.Logging;
 
 namespace Serilog
@@ -28,12 +30,20 @@ public static class LoggerSinkConfigurationExtensions
         /// </summary>
         /// <param name="configuration">The `WriteTo` object.</param>
         /// <param name="providers">A <see cref="LoggerProviderCollection"/> to write events to.</param>
+        /// <param name="restrictedToMinimumLevel">The minimum level for
+        /// events passed through the sink. Ignored when <paramref name="levelSwitch"/> is specified.</param>
+        /// <param name="levelSwitch">A switch allowing the pass-through minimum level
+        /// to be changed at runtime.</param>
         /// <returns>A <see cref="LoggerConfiguration"/> to allow method chaining.</returns>
-        public static LoggerConfiguration Providers(this LoggerSinkConfiguration configuration, LoggerProviderCollection providers)
+        public static LoggerConfiguration Providers(
+            this LoggerSinkConfiguration configuration,
+            LoggerProviderCollection providers,
+            LogEventLevel restrictedToMinimumLevel = LevelAlias.Minimum, 
+            LoggingLevelSwitch levelSwitch = null)
         {
             if (configuration == null) throw new ArgumentNullException(nameof(configuration));
             if (providers == null) throw new ArgumentNullException(nameof(providers));
-            return configuration.Sink(new LoggerProviderCollectionSink(providers));
+            return configuration.Sink(new LoggerProviderCollectionSink(providers), restrictedToMinimumLevel, levelSwitch);
         }
     }
 }