NServiceBus.CorrelationContextExtensions.SetCorrelationId C# (CSharp) Method

        public static void SetCorrelationId(this SendOptions options, string correlationId)
        {
            Guard.AgainstNull(nameof(options), options);
            Guard.AgainstNullAndEmpty(nameof(correlationId), correlationId);

            options.Context.GetOrCreate<AttachCorrelationIdBehavior.State>()
                .CustomCorrelationId = correlationId;
        }