Hosted Auth Request
public HostedAuthRequest HostedAuthRequest(@Json(name = "provider" ) AuthProvider provider, @Json(name = "redirect_uri" ) String redirectUri, @Json(name = "scope" ) List<String> scope, @Json(name = "state" ) String state, @Json(name = "login_hint" ) String loginHint, @Json(name = "cookie_nonce" ) String cookieNonce)