<PackageReference Include="System.ServiceModel.Primitives" Version="8.1.1" />

System.ServiceModel.Description.OperationDescription

public class OperationDescription
public MethodInfo BeginMethod { get; set; }

public KeyedByTypeCollection<IOperationBehavior> Behaviors { get; }

public ContractDescription DeclaringContract { get; set; }

public MethodInfo EndMethod { get; set; }

public FaultDescriptionCollection Faults { get; }

public bool IsInitiating { get; set; }

public bool IsOneWay { get; }

public bool IsTerminating { get; set; }

public Collection<Type> KnownTypes { get; }

public MessageDescriptionCollection Messages { get; }

public string Name { get; }

public KeyedCollection<Type, IOperationBehavior> OperationBehaviors { get; }

public MethodInfo SyncMethod { get; set; }

public MethodInfo TaskMethod { get; set; }

public OperationDescription(string name, ContractDescription declaringContract)