public function createBucket($bucket, $acl = self::OSS_ACL_TYPE_PRIVATE, $options = NULL)
{
$this->precheckCommon($bucket, NULL, $options, false);
$options[self::OSS_BUCKET] = $bucket;
$options[self::OSS_METHOD] = self::OSS_HTTP_PUT;
$options[self::OSS_OBJECT] = '/';
$options[self::OSS_HEADERS] = array(self::OSS_ACL => $acl);
$response = $this->auth($options);
$result = new PutSetDeleteResult($response);
return $result->getData();
}