title: JHipster - JhiAlertService - How to decide how long alerts are displayed?
body: <p>I have generated a JHipster project with version 4.9.0.</p>
  
  <p>I am using the JhiAlertService to display various messages to users.</p>
  
  <p>I would like to know how to send in parameters to indicate how long the messages are displayed.</p>