def render(self, context):
        js_template = self.inner_node.render(context)
        left_replaced_js_template = self.LEFT_PATTERN.sub(
            self.LEFT_TARGET, js_template)
        left_right_replaced_js_template = self.RIGHT_PATTERN.sub(
            self.RIGHT_TARGET, left_replaced_js_template)

        return "%s\n%s\n%s" % (
            self.top(),
            left_right_replaced_js_template,
            self.bottom(),
        )
renders the inner node (the included template)
dataset/ETHPy150Open haystack/eyebrowse-server/common/templatetags/jstemplate.py/JsTemplateBaseNode.render