in microbench/src/main/java/com/twitter/hpack/microbench/AbstractMicrobenchmarkBase.java [90:100]
static {
HeadersSize[] sizes = HeadersSize.values();
headersMap = new HashMap<HeadersKey, List<Header>>(sizes.length * 2);
for (HeadersSize size : sizes) {
HeadersKey key = new HeadersKey(size, true);
headersMap.put(key, key.newHeaders());
key = new HeadersKey(size, false);
headersMap.put(key, key.newHeaders());
}
}