def METHOD_NAME(self):
    # Just like everything else in argparse, the last value provided
    # for a destination has precedence.
    cmdline = self.prefix
    cmdline += '--instance-id i-1234 '
    cmdline += '--ebs-optimized Value=true'
    result = {'InstanceId': 'i-1234',
              'EbsOptimized': {'Value': True}}
    self.assert_params_for_cmd(cmdline, result)