public void CompareNullablePropertiesSameType(bool date1Null, bool date2Null)
{
//Arrange.
PersonEx2WithPropertyMap p1 = ModelsHelper.CreatePersonEx2WithPropertyMap(date1Null);
PersonEx2 p2 = ModelsHelper.CreatePersonEx2(date2Null);
ObjectComparer comparer = ObjectComparer.Create <PersonEx2WithPropertyMap, PersonEx2>();
//Act.
var result = comparer.Compare(p1, p2, out bool _);
//Assert.
result.Should().NotBeNull();
PropertyComparisonResult propResult = result[nameof(PersonEx2WithPropertyMap.DateOfBirth)];
propResult.Should().NotBeNull();
}