code: @Override
      public DeleteIdentitiesResult deleteIdentities(DeleteIdentitiesRequest request) {
          request = beforeClientExecution(request);
          return executeDeleteIdentities(request);
      }
docs: <p>
  Deletes identities from an identity pool. You can specify a list of 1-60 identities that you want to delete.
  </p>
  <p>
  You must use AWS Developer credentials to call this API.
  </p>
  
  @param deleteIdentitiesRequest
  Input to the <code>DeleteIdentities</code> action.
  @return Result of the DeleteIdentities operation returned by the service.
  @throws InvalidParameterException
  Thrown for missing or bad input parameter(s).
  @throws TooManyRequestsException
  Thrown when a request is throttled.
  @throws InternalErrorException
  Thrown when the service encounters an error during processing the request.
  @sample AmazonCognitoIdentity.DeleteIdentities
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/cognito-identity-2014-06-30/DeleteIdentities"
  target="_top">AWS API Documentation</a>