original_string: public function enrol_user(stdClass $instance, $userid, $roleid = null, $timestart = 0, $timeend = 0, $status = null, $recovergrades = null) {
          // no real enrolments here!
          return;
      }
code: public function enrol_user(stdClass $instance, $userid, $roleid = null, $timestart = 0, $timeend = 0, $status = null, $recovergrades = null) {
          // no real enrolments here!
          return;
      }
code_tokens: public function enrol_user ( stdClass $ instance , $ userid , $ roleid = null , $ timestart = 0 , $ timeend = 0 , $ status = null , $ recovergrades = null ) { // no real enrolments here! return ; }
docstring: Enrol a user using a given enrolment instance.
  
  @param stdClass $instance
  @param int $userid
  @param null $roleid
  @param int $timestart
  @param int $timeend
  @param null $status
  @param null $recovergrades
docstring_tokens: Enrol a user using a given enrolment instance .