(command.CommandList
  children: [
    (C {<atf_test_case>} {<missing>})
    (command.ShFunction
      name: missing_head
      body: 
        (BraceGroup
          children: [
            (C {<atf_set>} {(DQ <descr>)} 
              {(DQ <'Check route(8) with a missing argument (PR bin/42179)'>)}
            )
          ]
        )
    )
    (command.ShFunction
      name: missing_body
      body: 
        (BraceGroup
          children: [
            (C {<atf_check>} {<-s>} {<Id.ControlFlow_Exit exit> <Id.Lit_Colon ':'> <1>} {<-e>} 
              {<not-inline> <Id.Lit_Colon ':'> 
                (DQ <'route: writing to routing socket: Invalid argument'> <Id.Lit_BadBackslash '\\'> 
                  <n>
                )
              } {<route>} {<-n>} {<get>}
            )
          ]
        )
    )
    (command.ShFunction
      name: atf_init_test_cases
      body: (BraceGroup children:[(C {<atf_add_test_case>} {<missing>})])
    )
  ]
)