anchor.diff:  verify_value(_AKey, Value) ->
       {ok, Value}.
   
  -load_command_file(InFile) ->
  -    %load file
  -    BaseDir = ?CONFIG(service_config_path),
  -    % compile file to a module, store module name in config
  -    FileName = tts_file_util:to_abs(InFile, BaseDir),
  -    ModuleName = get_unique_module_name(),
  -    {ok, _} = erlydtl:compile_file(FileName, ModuleName),
  -    {ok, ModuleName}.
  -
  -get_unique_module_name() ->
  -    Random = tts_utils:random_string(8),
  -    Prefix = <<"tts_service_cmd_">>,
  -    ModuleName = binary_to_atom(<< Prefix/binary, Random/binary >>, utf8),
  -    ensure_module_name_unused(code:is_loaded(ModuleName), ModuleName).
  -
  -ensure_module_name_unused(false, ModuleName) ->
  -    ModuleName;
  -ensure_module_name_unused(_, _) ->
  -    get_unique_module_name().
  -
  
positive.code:                     {<<"ConnectionPort">>, con_port},
                      {<<"ConnectionSshDir">>, con_ssh_user_dir},
  
                      {<<"RequestCmdFile">>, cred_cmd_req_file},
                      {<<"RevokeCmdFile">>, cred_cmd_rev_file},
                      {<<"IncidentCmdFile">>, cred_cmd_si_file},
  
                      {<<"ssh">>, ssh},
                      {<<"local">>, local},
  
negative.code:     {ok, Host};
  verify_value(con_port, Port) ->
      {ok, list_to_integer(Port)};
  verify_value(script, File) ->
      BaseDir = ?CONFIG(service_config_path),
      tts_file_util:to_abs(File, BaseDir);
  verify_value(AKey, Value) when is_list(Value) ->
      % default is to convert to binary
      verify_value(AKey, list_to_binary(Value));
  