new_contents: def test_article_example():
      """Test to check that README example runs"""
  
      from stencila.schema.types import Article, Person
      from stencila.schema.util import to_json
  
      to_json(
          Article(
              title = "The Impact of Interactive Epistemologies on Cryptography",
              authors = [
                  Person(
                      givenNames = ["Josiah", "Stinkney"],
                      familyNames = ["Carberry"]
                  )
              ]
          )
      )
  
subject: Add test for example