protected function getServers(array $options)
    {
        if (! array_key_exists('on', $options)) {
            $options['on'] = [];
        }

        return Arr::flatten(array_map(function ($name) {
            return $this->getServer($name);
        }, (array) $options['on']));
    }
protected function getServers(array $options)
    {
        if (! array_key_exists('on', $options)) {
            $options['on'] = [];
        }

        return Arr::flatten(array_map(function ($name) {
            return $this->getServer($name);
        }, (array) $options['on']));
    }
protected function getServers ( array $ options ) { if ( ! array_key_exists ( 'on' , $ options ) ) { $ options [ 'on' ] = [ ] ; } return Arr :: flatten ( array_map ( function ( $ name ) { return $ this -> getServer ( $ name ) ; } , ( array ) $ options [ 'on' ] ) ) ; }
Get the IP addresses of the servers specified on the options.

@param  array  $options
@return array
Get the IP addresses of the servers specified on the options .