whole_func_string: function filterTrackeds(tracked, code){
    return _.omit(tracked, Object.keys(tracked).filter(function(fname){ return tracked[fname].code !== code; }));
  }
func_code_string: function filterTrackeds(tracked, code){
    return _.omit(tracked, Object.keys(tracked).filter(function(fname){ return tracked[fname].code !== code; }));
  }
func_documentation_string: helpers