title: How to get a list of Herald Rule regular expressions from Phabricator with REST API?
body: <p>There is git repository and Phabricator using for code review.
  And there is need to get a list of Herald rule regular expressions in order to define which files of repo are not covered with Herald rules.</p>
  
  <p>It there any way to reach it with external or Phabricator internal tools?</p>