<PackageReference Include="System.ServiceModel.Primitives" Version="8.1.2" />

System.ServiceModel.Description.MessageDescription

public class MessageDescription
public string Action { get; }

public MessageBodyDescription Body { get; }

public MessageDirection Direction { get; }

public bool HasProtectionLevel { get; }

public MessageHeaderDescriptionCollection Headers { get; }

public Type MessageType { get; set; }

public MessagePropertyDescriptionCollection Properties { get; }

public ProtectionLevel ProtectionLevel { get; set; }

public MessageDescription(string action, MessageDirection direction)

public bool ShouldSerializeProtectionLevel()