docs: @Bean
      public LineMessagingClient lineMessagingClient(
              final ChannelTokenSupplier channelTokenSupplier) {
          return LineMessagingClient
                  .builder(channelTokenSupplier)
                  .apiEndPoint(lineBotProperties.getApiEndPoint())
                  .connectTimeout(lineBotProperties.getConnectTimeout())
                  .readTimeout(lineBotProperties.getReadTimeout())
                  .writeTimeout(lineBotProperties.getWriteTimeout())
                  .build();
      }