/**
* Authenticate via the OAuth2 password flow
*
* @param string $username
* @param string $password
*
* @return FamilySearchClient
*/
public function authenticateViaOAuth2Password($username, $password)
{
$this->requireClientIdAndRedirectURI();
$this->treeState->authenticateViaOAuth2Password($username, $password, $this->clientId, $this->clientSecret);
return $this;
}
