Method register

xds/src/main/java/io/grpc/xds/FilterRegistry.java:51–59

(Filter.Provider... filters)

  }

  @VisibleForTesting
  FilterRegistry register(Filter.Provider... filters) {
    for (Filter.Provider filter : filters) {
      for (String typeUrl : filter.typeUrls()) {
        supportedFilters.put(typeUrl, filter);
      }
    }
    return this;
  }

  @Nullable
  Filter.Provider get(String typeUrl) {