void http(HttpMethod method, String path) throws IOException {
    AggregatedHttpRequest delete = AggregatedHttpRequest.of(method, path);
    Internal.instance.http(storage)
      .newCall(delete, (parser, contentString) -> null, method + "-" + path).execute();
  }
Catch-all template doesn't store source
zipkin-storage/elasticsearch/src/test/java/zipkin2/elasticsearch/integration/ITEnsureIndexTemplate.java