[{ s =
   (DefStmt
      ({ name =
         (EN
            (Id (("main", _),
               { id_resolved = ref (None);
                 id_resolved_alternatives = ref ([]); id_type = ref (None);
                 id_svalue = ref (Unknown); id_flags = ref (0);
                 id_info_id = _ }
               )));
         attrs = []; tparams = None },
       (FuncDef
          { fkind = (Function, _); fparams = (_, [], _); frettype = None;
            fbody =
            (FBStmt
               { s =
                 (Block
                    (_,
                     [{ s =
                        (ExprStmt (
                           { e =
                             (Call (
                                { e =
                                  (N
                                     (Id (("println!", _),
                                        { id_resolved = ref (None);
                                          id_resolved_alternatives = ref ([]);
                                          id_type = ref (None);
                                          id_svalue = ref (Unknown);
                                          id_flags = ref (0); id_info_id = _
                                          }
                                        )));
                                  e_id = 0; e_range = None;
                                  is_implicit_return = false;
                                  facts = <opaque> },
                                (_,
                                 [(Arg
                                     { e =
                                       (L
                                          (String (_, ("Hello world!", _), _)));
                                       e_id = 0; e_range = None;
                                       is_implicit_return = false;
                                       facts = <opaque> })
                                   ],
                                 _)
                                ));
                             e_id = 0; e_range = None;
                             is_implicit_return = true; facts = <opaque> },
                           _));
                        s_range = None }
                       ],
                     _));
                 s_range = None })
            })));
   s_range = None }
  ]