def create
      session = build_passwordless_session(find_authenticatable)

      if session.save
        Passwordless.after_session_save.call(session)
      end

      render
    end
def create
      session = build_passwordless_session(find_authenticatable)

      if session.save
        Passwordless.after_session_save.call(session)
      end

      render
    end
post '/sign_in'
   Creates a new Session record then sends the magic link
   renders sessions/create.html.erb.
 @see Mailer#magic_link Mailer#magic_link