title: how to understand the parallel="instances" in testng suite configure?
body: <p>parallel="instances": </p>
  
  <blockquote>
    <p>TestNG will run all the methods in the same instance in the same thread, but two methods on two different instances will be running in different threads. </p>
  </blockquote>
  
  <p>how to understand this sentence?</p>