anchor.diff:           collect_var_source_def_pos_info/1]).
   
   -export([test_framework_used/1]).
  +
  +-export([parse_annotate_expr/1, parse_annotate_expr/2,
  +         extended_parse_annotate_expr/1,
  +         extended_parse_annotate_expr/2]).
   
   -include("../include/wrangler_internal.hrl"). 
   
  
positive.code:           end,
      Vars=api_ast_traverse:fold(Fun, [], Node),
      lists:usort(Vars).
  
negative.code:          free_vars/1, exported_vars/1, bound_vars/1,
           modname_to_filename/2, funname_to_defpos/2,
           group_by/2,filehash/1,apply_style_funs/0,
           try_eval/4, is_macro_name/1, is_literal/1,
           is_fun_name/1, is_var_name/1]).
  
  -export([callback_funs/1, 
           is_callback_fun/3,
  