%Error: t/t_string_type_methods_bad.v:15:13: The 1 arguments passed to .len method does not match its requiring 0 arguments
                                           : ... In instance t
   15 |       i = s.len(0);  
      |             ^~~
%Error: t/t_string_type_methods_bad.v:16:9: The 0 arguments passed to .itoa method does not match its requiring 1 arguments
                                          : ... In instance t
   16 |       s.itoa;   
      |         ^~~~
%Error: t/t_string_type_methods_bad.v:17:9: The 3 arguments passed to .itoa method does not match its requiring 1 arguments
                                          : ... In instance t
   17 |       s.itoa(1,2,3);   
      |         ^~~~
%Error: Exiting due to
