(command.CommandList
  children: [
    (C {<atf_test_case>} {<basic>})
    (command.ShFunction
      name: basic_head
      body: 
        (BraceGroup
          children: [(C {<atf_set>} {(DQ <descr>)} {(DQ <'Test that sysctl(8) works'>)})]
        )
    )
    (command.ShFunction
      name: basic_body
      body: 
        (BraceGroup
          children: [
            (C {<atf_check>} {<-s>} {<Id.ControlFlow_Exit exit> <Id.Lit_Colon ':'> <0>} {<-o>} {<ignore>} 
              {<-e>} {<empty>} {<-x>} {(DQ <'sysctl -a'>)}
            )
            (C {<atf_check>} {<-s>} {<Id.ControlFlow_Exit exit> <Id.Lit_Colon ':'> <0>} {<-o>} {<ignore>} 
              {<-e>} {<empty>} {<-x>} {(DQ <'sysctl -d'>)}
            )
          ]
        )
    )
    (command.ShFunction
      name: atf_init_test_cases
      body: (BraceGroup children:[(C {<atf_add_test_case>} {<basic>})])
    )
  ]
)