@staticmethod<EOL><INDENT>def link(url, display=None):<DEDENT>
return """<STR_LIT>""".format(url, display or url)<EOL>
Create a hyperlink.  If ``display`` is not specified, display the URL.

.. note:: Anomalous API behaviour: official clients don't provide the ability to set display text.

Args:
    url (str): full URL to link to
    display (str): custom label for the hyperlink

Returns:
    str: tag to display a hyperlink