public Counter getCounterByRequestId(CounterRequest request) {
		final String requestId = request.getId();
		for (final Counter counter : counters) {
			if (counter.isRequestIdFromThisCounter(requestId)) {
				return counter;
			}
		}
		return null;
	}
@Test
	public void testGetCounterByRequestId() {
		final Counter counter = createCounter();
		final Collector collector = new Collector("test collector3",
				Collections.singletonList(counter));
		counter.addRequest("test request", 0, 0, 0, false, 1000);
		final CounterRequest request = counter.getRequests().get(0);
		assertEquals("getCounterByRequestId", counter, collector.getCounterByRequestId(request));
		assertNull("getCounterByRequestId",
				collector.getCounterByRequestId(new CounterRequest("test", "unknown")));
	}