public void SetUp()
{
m = new Markdown();
m.AddLinkDefinition(new LinkDefinition("link1", "url.com", "title"));
m.AddLinkDefinition(new LinkDefinition("link2", "url.com"));
m.AddLinkDefinition(new LinkDefinition("img1", "url.com/image.png", "title"));
m.AddLinkDefinition(new LinkDefinition("img2", "url.com/image.png"));
s = new SpanFormatter(m);
}