public void SimilarModifications_ElementsEquality()
{
var paragOne = new Paragraph();
var paragTwo = new Paragraph();
paragOne.Should().Be(paragTwo);
paragOne.AddContent(new Emphasis().AddTextContent("test text content"));
paragOne.Should().NotBe(paragTwo);
paragTwo.AddContent(new Emphasis().AddTextContent("test text content"));
paragOne.Should().Be(paragTwo);
paragOne.AddAttribute(new Fb2Attribute(AttributeNames.Id, "testId"));
paragOne.Should().NotBe(paragTwo);
paragTwo.AddAttribute(new Fb2Attribute(AttributeNames.Id, "testId"));
paragOne.Should().Be(paragTwo);
}