src/Message.php
public function url($text, $title, $url)
    {
        $payload = [
            'template_type' => 'button',
            'text' => $text,
            'buttons' => [
                [
                    'title' => $title,
                    'url' => $url
                ]
            ],
        ];

        $this->setAttachment('template', $payload);

        return $this;
    }
public function url($text, $title, $url)
    {
        $payload = [
            'template_type' => 'button',
            'text' => $text,
            'buttons' => [
                [
                    'title' => $title,
                    'url' => $url
                ]
            ],
        ];

        $this->setAttachment('template', $payload);

        return $this;
    }
Populate simple url button

@param string $text Text
@param string $title Title
@param string $url Url

@return Message