Corrections according to PR

Author: papafe

src/MongoDB.Driver/Search/SearchDefinition.cs

@@ -163,7 +163,7 @@ public override BsonDocument Render(RenderArgs<TDocument> args)
             }
             else
             {
-                var (renderedPath, fieldSerializer) = _path.RenderAndGetFieldSerializer(args);
+                var renderedPath = _path.RenderAndGetFieldSerializer(args, out var fieldSerializer);
                 renderedArgs = RenderArguments(args, fieldSerializer);
                 renderedArgs.Add("path", renderedPath);
             }

src/MongoDB.Driver/Search/SearchPathDefinition.cs

@@ -105,17 +105,27 @@ public static implicit operator SearchPathDefinition<TDocument>(List<string> fie
         /// <param name="args">The render arguments.</param>
         /// <returns>The rendered field.</returns>
         protected string RenderField(FieldDefinition<TDocument> fieldDefinition, RenderArgs<TDocument> args)
-            => RenderFieldAndGetFieldSerializer(fieldDefinition, args).renderedPath;
+            => RenderFieldAndGetFieldSerializer(fieldDefinition, args, out _);
 
-        internal virtual (BsonValue, IBsonSerializer) RenderAndGetFieldSerializer(RenderArgs<TDocument> args) => (Render(args), null);
+        internal virtual BsonValue RenderAndGetFieldSerializer(
+            RenderArgs<TDocument> args,
+            out IBsonSerializer fieldSerializer)
+        {
+            fieldSerializer = null;
+            return Render(args);
+        }
 
-        internal (string renderedPath, IBsonSerializer fieldSerializer) RenderFieldAndGetFieldSerializer(FieldDefinition<TDocument> fieldDefinition, RenderArgs<TDocument> args)
+        internal string RenderFieldAndGetFieldSerializer(
+            FieldDefinition<TDocument> fieldDefinition,
+            RenderArgs<TDocument> args,
+            out IBsonSerializer fieldSerializer)
         {
             var renderedField = fieldDefinition.Render(args);
             var prefix = args.PathRenderArgs.PathPrefix;
             var renderedString = prefix == null ? renderedField.FieldName : $"{prefix}.{renderedField.FieldName}";
+            fieldSerializer = renderedField.FieldSerializer;
 
-            return (renderedString, renderedField.FieldSerializer);
+            return renderedString;
         }
     }
 }

src/MongoDB.Driver/Search/SearchPathDefinitionBuilder.cs

@@ -146,8 +146,8 @@ public SingleSearchPathDefinition(FieldDefinition<TDocument> field)
         public override BsonValue Render(RenderArgs<TDocument> args) =>
             RenderField(_field, args);
 
-        internal override (BsonValue, IBsonSerializer) RenderAndGetFieldSerializer(RenderArgs<TDocument> args)
-            => RenderFieldAndGetFieldSerializer(_field, args);
+        internal override BsonValue RenderAndGetFieldSerializer(RenderArgs<TDocument> args, out IBsonSerializer fieldSerializer)
+            => RenderFieldAndGetFieldSerializer(_field, args, out fieldSerializer);
     }
 
     internal sealed class WildcardSearchPathDefinition<TDocument> : SearchPathDefinition<TDocument>