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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def set_footer(self, *, text=EmptyEmbed, icon_url=EmptyEmbed):
 """Sets the footer for the embed content. This function returns the class instance to allow for fluent-style chaining. Parameters text: :class:`str` The footer text. icon_url: :class:`str` The URL of the footer icon. Only HTTP(S) is supported. """


        self._footer = {}
        if text is not EmptyEmbed:
            self._footer['text'] = str(text)

        if icon_url is not EmptyEmbed:
            self._footer['icon_url'] = str(icon_url)

        return self