code: @Override
      public ListSAMLProvidersResult listSAMLProviders(ListSAMLProvidersRequest request) {
          request = beforeClientExecution(request);
          return executeListSAMLProviders(request);
      }
docs: <p>
  Lists the SAML provider resource objects defined in IAM in the account.
  </p>
  <note>
  <p>
  This operation requires <a
  href="https://docs.aws.amazon.com/general/latest/gr/signature-version-4.html">Signature Version 4</a>.
  </p>
  </note>
  
  @param listSAMLProvidersRequest
  @return Result of the ListSAMLProviders operation returned by the service.
  @throws ServiceFailureException
  The request processing has failed because of an unknown error, exception or failure.
  @sample AmazonIdentityManagement.ListSAMLProviders
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/iam-2010-05-08/ListSAMLProviders" target="_top">AWS API
  Documentation</a>