JsonConfigWriter.java 文件源码

@Override
public Map<ApiKey, String> writeConfig(Iterable<? extends ApiConfig> configs)
    throws ApiConfigException {
  Multimap<ApiKey, ? extends ApiConfig> apisByKey = Multimaps.index(configs,
      new Function<ApiConfig, ApiKey>() {
        @Override public ApiKey apply(ApiConfig config) {
          return config.getApiKey();
        }
      });

  // This *must* retain the order of apisByKey so the lily_java_api BUILD rule has predictable
  // output order.
  Map<ApiKey, String> results = Maps.newLinkedHashMap();
  for (ApiKey apiKey : apisByKey.keySet()) {
    Collection<? extends ApiConfig> apiConfigs = apisByKey.get(apiKey);
    validator.validate(apiConfigs);
    results.put(apiKey, generateForApi(apiConfigs));
  }
  return results;
}