title: Where can I find the arquillian xml configuration documentation?
body: <p>I've tried to learn the JBoss Arquillian, by following the <a href="https://docs.jboss.org/author/display/ARQ/Reference+Guide" rel="noreferrer">formal document</a> and got confused about the configuration, the arquillian.xml. Since it is mentioned once <a href="https://docs.jboss.org/author/display/ARQ/Container+configuration" rel="noreferrer">here</a>. </p>
  
  <p>Even I also found that there is a specific configuration describes at the <a href="https://docs.jboss.org/author/display/ARQ/Container+adapters" rel="noreferrer">container adapters</a> section. It does not cover all elements/properties, e.g. <strong><em>engine</em></strong> and its property list, <strong><em>defaultProtocol</em></strong>, <strong><em>extension</em></strong> and <strong><em>group</em></strong>.</p>
  
  <p>I'm worried and wondered, if there is any further or full explanation for this configuration file or not. Could you please help to shed some light on this configuration? </p>