Send request

def ajax(self, url, method="GET", data=None, headers=None):
        """Send request"""
        params = {
            "method": method,
            "url": self.url_prefix + url,
            "headers": headers
        }
        if data is not None:
            if method in ["GET", "DELETE"]:
                params["params"] = data
            elif method in ["POST", "PUT", "PATCH"]:
                params["json"] = data
        resp = self.session.request(**params)
        if self.auth_header in resp.headers:
            self.session.headers[
                self.auth_header] = resp.headers[self.auth_header]
        return resp_json(resp)