(command.CommandList
  children: [
    (C {<eval>} 
      {
        (command_sub
          left_token: <Id.Left_DollarParen '$('>
          command_list: 
            (command.CommandList
              children: [(C {<gpg-agent>} {<--daemon>} {<--allow-preset-passphrase>})]
            )
        )
      }
    )
    (C {<gpg>} {<--use-agent>} {<-s>} {<LICENSE.txt>})
    (C {<rm>} {<-rf>} {<LICENSE.txt.gpg>})
  ]
)