whole_func_string: function _start(timer){
    log('start %j', timer.conf);
    timer.state.intervalTimer = setInterval(_onInterval, timer.conf.intervalMs, timer);
    return _ping(timer);
  }
func_code_string: function _start(timer){
    log('start %j', timer.conf);
    timer.state.intervalTimer = setInterval(_onInterval, timer.conf.intervalMs, timer);
    return _ping(timer);
  }
func_documentation_string: Private Functions