string not null

src/libraries/Microsoft.Extensions.Configuration.Ini/ref/Microsoft.Extensions.Configuration.Ini.cs

@@ -32,7 +32,7 @@ public partial class IniStreamConfigurationProvider : Microsoft.Extensions.Confi
     {
         public IniStreamConfigurationProvider(Microsoft.Extensions.Configuration.Ini.IniStreamConfigurationSource source) : base (default(Microsoft.Extensions.Configuration.StreamConfigurationSource)) { }
         public override void Load(System.IO.Stream stream) { }
-        public static System.Collections.Generic.IDictionary<string, string?> Read(System.IO.Stream stream) { throw null; }
+        public static System.Collections.Generic.IDictionary<string, string> Read(System.IO.Stream stream) { throw null; }
     }
     public partial class IniStreamConfigurationSource : Microsoft.Extensions.Configuration.StreamConfigurationSource
     {

src/libraries/Microsoft.Extensions.Configuration.Ini/src/IniStreamConfigurationProvider.cs

@@ -23,9 +23,9 @@ public IniStreamConfigurationProvider(IniStreamConfigurationSource source) : bas
         /// </summary>
         /// <param name="stream">The stream of INI data.</param>
         /// <returns>The <see cref="IDictionary{String, String}"/> which was read from the stream.</returns>
-        public static IDictionary<string, string?> Read(Stream stream)
+        public static IDictionary<string, string> Read(Stream stream)
         {
-            var data = new Dictionary<string, string?>(StringComparer.OrdinalIgnoreCase);
+            var data = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
             using (var reader = new StreamReader(stream))
             {
                 string sectionPrefix = string.Empty;