protected function buildWifiString()
{
$wifi = $this->prefix;
if (isset($this->encryption)) {
$wifi .= 'T:' . $this->encryption . $this->separator;
}
if (isset($this->ssid)) {
$wifi .= 'S:' . $this->ssid . $this->separator;
}
if (isset($this->password)) {
$wifi .= 'P:' . $this->password . $this->separator;
}
if (isset($this->hidden)) {
$wifi .= 'H:' . $this->hidden . $this->separator;
}
return $wifi;
}