Method record

src/main/java/wycc/io/HeapWriter.java:161–165

(int opcode, int size)

	}

	public static void record(int opcode, int size) {
		Metric old = metrics.get(opcode);
		old = old == null ? new Metric() : old;
		metrics.put(opcode, old.record(size));
	}

	public static void printMetrics(Syntactic.Schema schema) {
		List<Pair<Integer,Metric>> items = new ArrayList();