/**
* Register index schema supplied by database.
*
* @param string $name Index name.
* @param mixed $schema Driver specific index information schema.
* @return AbstractIndex
*/
protected function registerIndex($name, $schema)
{
$index = $this->driver->indexSchema($this, $name, $schema);
$this->dbIndexes[$name] = clone $index;
return $this->indexes[$name] = $index;
}
