(Com {[LIT_CHARS cat]}
  <
  (HereDocRedirectNode here_end='EOF' do_expansion=True body_word={[DQ [LIT_CHARS "  Hello world "][VarSub PATH][LIT_CHARS "\n"][LIT_CHARS "  EOF\n"]]} <REDIR_DLESSDASH "<<-"> 0),
  >
)