anchor.diff:  -export([clear_all_mnesia_data/0,
   	 generate_targets/1,
   	 generate_paths/1,
  +	 generate_paths/2,
   	 generate_visits/1,
  +	 generate_visits/2,
   	 validate_meta/6,
   	 post_request/2,
   	 build_request/4,
  
positive.code:     Targets = generate_targets(random:uniform(N)),
      generate_paths(N, Targets, []).
  
  
  generate_targets(N) ->
      generate_targets(N, []).
  
negative.code:     Paths = generate_paths(random:uniform(N)),
      generate_visits(N, Paths, []).
  
  generate_visits(N, Paths) when is_list(Paths) ->
      generate_visits(N, Paths, []);
  generate_visits(N, Record) when is_record(Record, target) ->
      Paths = generate_paths(random:uniform(N), Record),
      generate_visits(N, Paths, []).
  
  validate_meta(TotalSize, ObjCount, RangeStart, RangeEnd, MaxOffset, Meta) ->
      TotalSize = proplists:get_value(<<"totalCollectionSize">>, Meta),
  