private void AddLabeledValueImpl(AssertionFailure.LabeledValue labeledValue)
        {
            if (labeledValues == null)
            {
                labeledValues = new List <AssertionFailure.LabeledValue>();
            }

            labeledValues.Add(labeledValue);
        }
 /// <summary>
 /// Adds a labeled value.
 /// </summary>
 /// <remarks>
 /// <para>
 /// The order in which this method is called determines the order in which this
 /// value will appear relative to other labeled values.
 /// </para>
 /// </remarks>
 /// <param name="labeledValue">The labeled value.</param>
 /// <returns>The builder, to allow for fluent method chaining.</returns>
 public AssertionFailureBuilder AddLabeledValue(AssertionFailure.LabeledValue labeledValue)
 {
     AddLabeledValueImpl(labeledValue);
     return(this);
 }