Implements Drupal\Core\Config\StorageInterface::exists().
Overrides StorageInterface::exists
public function exists($name) {
return (bool) $this->connection
->queryRange('SELECT 1 FROM {' . $this->connection
->escapeTable($this->table) . '} WHERE name = :name', 0, 1, array(
':name' => $name,
), $this->options)
->fetchField();
}