@staticmethod
def text_external_link(text, link=''):
    """ Using this method can be created an external link of a file or a web page.

        :param text: Text to be displayed.
        :type text: str
        :param link: External Link.
        :type link: str
        :return: return a string like this: ``'[Text to be shown](https://write.link.com)'``
        :rtype: str"""
    return '[' + text + '](' + link + ')'
