docstr: Test references across blocks.
code: def test_reference_across_blocks(self):
      """Test references across blocks."""
  
      self.assertMarkdownRenders(
          self.dedent(
              """
                  I would like to tell you about the [code of
  
                  conduct][] we are using in this project.
  
                  [code of conduct]: https://github.com/Python-Markdown/markdown/blob/master/CODE_OF_CONDUCT.md
                  """
          ),
          "<p>I would like to tell you about the [code of</p>\n"
          "<p>conduct][] we are using in this project.</p>",
      )
  
imports: from markdown.test_tools import TestCase
label_desc: Use image node_id 16 for calling the TestReferenceLinks obj's underlying member method code with example usage: obj.test_reference_across_blocks() without return types