netcoreapp3.0 
namespace Newtonsoft.Json.Linq
{
    public abstract class JContainer : JToken, ICollection<JToken!>, IEnumerable<JToken!>, IList<JToken!>, ICollection, IEnumerable, IList, INotifyCollectionChanged, IBindingList, ITypedList
    {
        public event AddingNewEventHandler! AddingNew;
    }
}
.NET
5.06.07.08.09.010.0
.NET Core
2.02.12.23.03.1
.NET Framework
2.03.03.54.04.54.5.14.5.24.64.6.14.6.24.74.7.14.7.24.84.8.1
.NET Standard
2.02.1
Information specific to netcoreapp3.0
Assembly

Newtonsoft.Json , Version=13.0.0.0, PublicKeyToken=30ad4fe6b2a6aeed

Referencing

Your project needs a package reference to Newtonsoft.Json.

Package Newtonsoft.Json (13.0.3) netstandard2.0
  • Built-in API
  • Package-provided API