text: <?php
  
  namespace AlibabaCloud\Client\Clients;
  
  use AlibabaCloud\Client\Exception\ClientException;
  use AlibabaCloud\Client\Signature\ShaHmac1Signature;
  use AlibabaCloud\Client\Credentials\RamRoleArnCredential;
  
  /**
   * Use the AssumeRole of the RAM account to complete  the authentication.
   *
   * @package   AlibabaCloud\Client\Clients
   */
  class RamRoleArnClient extends Client
  {
  
      /**
       * @param string       $accessKeyId
       * @param string       $accessKeySecret
       * @param string       $roleArn
       * @param string       $roleSessionName
       * @param string|array $policy
       *
       * @throws ClientException
       */
      public function __construct($accessKeyId, $accessKeySecret, $roleArn, $roleSessionName, $policy = '')
      {
          parent::__construct(
              new RamRoleArnCredential($accessKeyId, $accessKeySecret, $roleArn, $roleSessionName, $policy),
              new ShaHmac1Signature()
          );
      }
  }
  