public function exec():string {
		ob_start();
		$response = curl_exec($this->ch);
		$this->buffer = ob_get_contents();
		ob_end_clean();

		if(false === $response) {
			throw new CurlException($this->error());
		}
		if(true === $response) {
			$response = $this->buffer;
		}
		
		return $response;
	}