<PackageReference Include="System.ServiceModel.Primitives" Version="6.0.0" />

System.ServiceModel.Channels.ChannelFactoryBase

namespace System.ServiceModel.Channels { public abstract class ChannelFactoryBase : ChannelManagerBase, IChannelFactory, ICommunicationObject, IAsyncChannelFactory, IAsyncCommunicationObject { protected ChannelFactoryBase(); protected ChannelFactoryBase(IDefaultCommunicationTimeouts timeouts); public virtual T GetProperty<T>() where T : class; } }