Even more warnings

Author: nvborisenko

dotnet/src/webdriver/BiDi/Communication/Json/Converters/Enumerable/GetCookiesResultConverter.cs

@@ -16,7 +16,7 @@ public override GetCookiesResult Read(ref Utf8JsonReader reader, Type typeToConv
         var cookies = doc.RootElement.GetProperty("cookies").Deserialize<IReadOnlyList<Modules.Network.Cookie>>(options);
         var partitionKey = doc.RootElement.GetProperty("partitionKey").Deserialize<PartitionKey>(options);
 
-        return new GetCookiesResult(cookies, partitionKey);
+        return new GetCookiesResult(cookies!, partitionKey!);
     }
 
     public override void Write(Utf8JsonWriter writer, GetCookiesResult value, JsonSerializerOptions options)

dotnet/src/webdriver/BiDi/Communication/Json/Converters/Enumerable/GetRealmsResultConverter.cs

@@ -15,7 +15,7 @@ public override GetRealmsResult Read(ref Utf8JsonReader reader, Type typeToConve
         var doc = JsonDocument.ParseValue(ref reader);
         var realms = doc.RootElement.GetProperty("realms").Deserialize<IReadOnlyList<RealmInfo>>(options);
 
-        return new GetRealmsResult(realms);
+        return new GetRealmsResult(realms!);
     }
 
     public override void Write(Utf8JsonWriter writer, GetRealmsResult value, JsonSerializerOptions options)

dotnet/src/webdriver/BiDi/Communication/Json/Converters/Enumerable/GetUserContextsResultConverter.cs

@@ -15,7 +15,7 @@ public override GetUserContextsResult Read(ref Utf8JsonReader reader, Type typeT
         var doc = JsonDocument.ParseValue(ref reader);
         var userContexts = doc.RootElement.GetProperty("userContexts").Deserialize<IReadOnlyList<UserContextInfo>>(options);
 
-        return new GetUserContextsResult(userContexts);
+        return new GetUserContextsResult(userContexts!);
     }
 
     public override void Write(Utf8JsonWriter writer, GetUserContextsResult value, JsonSerializerOptions options)

dotnet/src/webdriver/BiDi/Communication/Json/Converters/Enumerable/LocateNodesResultConverter.cs

@@ -16,7 +16,7 @@ public override LocateNodesResult Read(ref Utf8JsonReader reader, Type typeToCon
         var doc = JsonDocument.ParseValue(ref reader);
         var nodes = doc.RootElement.GetProperty("nodes").Deserialize<IReadOnlyList<RemoteValue.Node>>(options);
 
-        return new LocateNodesResult(nodes);
+        return new LocateNodesResult(nodes!);
     }
 
     public override void Write(Utf8JsonWriter writer, LocateNodesResult value, JsonSerializerOptions options)