diff --git a/src/libraries/Microsoft.Extensions.Configuration.Abstractions/ref/Microsoft.Extensions.Configuration.Abstractions.cs b/src/libraries/Microsoft.Extensions.Configuration.Abstractions/ref/Microsoft.Extensions.Configuration.Abstractions.cs
index 4c2c27406eddb7..ef696d9a1e9312 100644
--- a/src/libraries/Microsoft.Extensions.Configuration.Abstractions/ref/Microsoft.Extensions.Configuration.Abstractions.cs
+++ b/src/libraries/Microsoft.Extensions.Configuration.Abstractions/ref/Microsoft.Extensions.Configuration.Abstractions.cs
@@ -7,6 +7,7 @@
 
 namespace Microsoft.Extensions.Configuration
 {
+    // Train for PR
     public static partial class ConfigurationExtensions
     {
         public static Microsoft.Extensions.Configuration.IConfigurationBuilder Add<TSource>(this Microsoft.Extensions.Configuration.IConfigurationBuilder builder, System.Action<TSource> configureSource) where TSource : Microsoft.Extensions.Configuration.IConfigurationSource, new() { throw null; }
diff --git a/src/libraries/Microsoft.Extensions.Configuration.Abstractions/src/ConfigurationPath.cs b/src/libraries/Microsoft.Extensions.Configuration.Abstractions/src/ConfigurationPath.cs
index 8de31a5fdb1fed..c70a11608288dc 100644
--- a/src/libraries/Microsoft.Extensions.Configuration.Abstractions/src/ConfigurationPath.cs
+++ b/src/libraries/Microsoft.Extensions.Configuration.Abstractions/src/ConfigurationPath.cs
@@ -7,6 +7,7 @@
 
 namespace Microsoft.Extensions.Configuration
 {
+    // Train for PR
     /// <summary>
     /// Utility methods and constants for manipulating Configuration paths
     /// </summary>
diff --git a/src/libraries/Microsoft.Extensions.Configuration.Abstractions/src/IConfigurationProvider.cs b/src/libraries/Microsoft.Extensions.Configuration.Abstractions/src/IConfigurationProvider.cs
index 961d78224ce4f3..fe3515903252f0 100644
--- a/src/libraries/Microsoft.Extensions.Configuration.Abstractions/src/IConfigurationProvider.cs
+++ b/src/libraries/Microsoft.Extensions.Configuration.Abstractions/src/IConfigurationProvider.cs
@@ -12,6 +12,7 @@ namespace Microsoft.Extensions.Configuration
     /// </summary>
     public interface IConfigurationProvider
     {
+        // Train for PR
         /// <summary>
         /// Tries to get a configuration value for the specified key.
         /// </summary>