title: How to set current datetime in gremlin console?
body: <p>How to set current DateTime in the gremlin console?</p>
  <p>I need to add an audit field <code>created_on</code> with <code>current_timestamp</code> as default value</p>
  <p>Eg:</p>
  <pre><code>g.addV('student').property('name', 'Thirumal').property('created_on', datetime())
  </code></pre>
  <p>In, the above query, I am getting an error on <code>datetime()</code>. What is the syntax to add default date time?</p>