IFileInfo.Name is nullable

src/libraries/Microsoft.Extensions.Configuration.FileExtensions/src/FileConfigurationProvider.cs

@@ -53,7 +53,7 @@ public override string ToString()
 
         private void Load(bool reload)
         {
-            IFileInfo? file = Source.FileProvider?.GetFileInfo(Source.Path ?? string.Empty);
+            IFileInfo? file = Source.FileProvider?.GetFileInfo(Source.Path!);
             if (file == null || !file.Exists)
             {
                 if (Source.Optional || reload) // Always optional on reload

src/libraries/Microsoft.Extensions.FileProviders.Abstractions/ref/Microsoft.Extensions.FileProviders.Abstractions.cs

@@ -16,7 +16,7 @@ public partial interface IFileInfo
         bool IsDirectory { get; }
         System.DateTimeOffset LastModified { get; }
         long Length { get; }
-        string Name { get; }
+        string? Name { get; }
         string? PhysicalPath { get; }
         System.IO.Stream CreateReadStream();
     }
@@ -36,12 +36,12 @@ public NotFoundDirectoryContents() { }
     }
     public partial class NotFoundFileInfo : Microsoft.Extensions.FileProviders.IFileInfo
     {
-        public NotFoundFileInfo(string name) { }
+        public NotFoundFileInfo(string? name) { }
         public bool Exists { get { throw null; } }
         public bool IsDirectory { get { throw null; } }
         public System.DateTimeOffset LastModified { get { throw null; } }
         public long Length { get { throw null; } }
-        public string Name { get { throw null; } }
+        public string? Name { get { throw null; } }
         public string? PhysicalPath { get { throw null; } }
         [System.Diagnostics.CodeAnalysis.DoesNotReturn]
         public System.IO.Stream CreateReadStream() { throw null; }

src/libraries/Microsoft.Extensions.FileProviders.Abstractions/src/IFileInfo.cs

@@ -29,7 +29,7 @@ public interface IFileInfo
         /// <summary>
         /// The name of the file or directory, not including any path.
         /// </summary>
-        string Name { get; }
+        string? Name { get; }
 
         /// <summary>
         /// When the file was last modified

src/libraries/Microsoft.Extensions.FileProviders.Abstractions/src/NotFoundFileInfo.cs

@@ -16,7 +16,7 @@ public class NotFoundFileInfo : IFileInfo
         /// Initializes an instance of <see cref="NotFoundFileInfo"/>.
         /// </summary>
         /// <param name="name">The name of the file that could not be found</param>
-        public NotFoundFileInfo(string name)
+        public NotFoundFileInfo(string? name)
         {
             Name = name;
         }
@@ -42,7 +42,7 @@ public NotFoundFileInfo(string name)
         public long Length => -1;
 
         /// <inheritdoc />
-        public string Name { get; }
+        public string? Name { get; }
 
         /// <summary>
         /// Always null.