public void AddCorrelationId()
        {
            // Arrange
            var data          = new HeaderDictionary();
            var correlationId = Guid.NewGuid().ToString();

            // Act
            var actual = data.AddCorrelationId(correlationId);

            // Assert
            Assert.NotNull(actual);
            Assert.True(Guid.TryParse(actual, out _));
        }