protected void createStateGetUserIdentifier(final Flow flow) {
        val viewState = createViewState(flow, CasWebflowConstants.STATE_ID_PASSWORDLESS_GET_USERID,
            "passwordless/casPasswordlessGetUserIdView");
        createTransitionForState(viewState, CasWebflowConstants.TRANSITION_ID_SUBMIT,
            CasWebflowConstants.STATE_ID_PASSWORDLESS_VERIFY_ACCOUNT);
    }
This is {@link PasswordlessAuthenticationWebflowConfigurer}.

@author Misagh Moayyed
@since 5.3.0
support/cas-server-support-passwordless-webflow/src/main/java/org/apereo/cas/web/flow/PasswordlessAuthenticationWebflowConfigurer.java