Mailjet\Client::_call PHP Method

    private function _call($method, $resource, $action, $args)
    {
        $args = array_merge(['id' => '', 'actionid' => '', 'filters' => [], 'body' => '{}'], array_change_key_case($args));
        $url = $this->buildURL($resource, $action, $args['id'], $args['actionid']);
        $contentType = $action == 'csvdata/text:plain' || $action == 'csverror/text:csv' ? 'text/plain' : 'application/json';
        return (new Request([$this->apikey, $this->apisecret], $method, $url, $args['filters'], $args['body'], $contentType))->call($this->call);
    }