Returns this Widget rendered as HTML, as a Unicode string.

def render(self, name, value, attrs=None, renderer=None):
        """
        Returns this Widget rendered as HTML, as a Unicode string.
        """
        if not hasattr(self, "editor_manifest"):
            self.editor_manifest = self.init_manifest(self.config_name)

        config = self.editor_manifest.get_config(self.config_name)
        if config.get('embed_config'):
            self.embed_config = True

        context = self.get_context(name, value, attrs)

        return self._render(self.template_name, context, renderer)