public function setVia($username)
{
$username = \Twitter\Helpers\Validators\ScreenName::trim($username);
if ($username) {
if ($this->validate_inputs) {
if (\Twitter\Helpers\Validators\ScreenName::isValid($username)) {
$this->via = $username;
}
} else {
$this->via = $username;
}
}
return $this;
}