r.mu.Lock()
	defer r.mu.Unlock()
	getDst := func(n int) []byte {
		if cap(dst) < n {
			return make([]byte, n)
		}
		return dst[:n]
	}

	if r.w == r.r {
		if r.isFull {
			buf := getDst(r.size)
			copy(buf, r.buf[r.r:])
			copy(buf[r.size-r.r:], r.buf[:r.w])
			return buf
		}
		return nil
	}

	if r.w > r.r {
		buf := getDst(r.w - r.r)
		copy(buf, r.buf[r.r:r.w])

        String response = checkMethodBase(new HashMap<>()).params(params).get("/api/v1/documents").asString();
        assertTrue(JsonPath.from(response).getInt("record_count") > 0);
        List<Map<String, Object>> docs = JsonPath.from(response).getList("data");
        for (Map<String, Object> doc : docs) {

        String response = checkGetMethod(searchBody, "").asString();
        final int total = JsonPath.from(response).getInt("response.total");
        final List<Map<String, String>> dicts = JsonPath.from(response).getList("response.settings");
        final int status = JsonPath.from(response).getInt("response.status");
        assertEquals(total, dicts.size());
        assertEquals(0, status);
    }

    @Override

        String response = checkGetMethod(searchBody, getListEndpointSuffix()).asString();
        final int total = JsonPath.from(response).getInt("response.total");
        final List<Map<String, String>> items = JsonPath.from(response).getList("response.settings");
        final int status = JsonPath.from(response).getInt("response.status");
        assertEquals(total, items.size());
        assertEquals(0, status);
    }

        assertEquals(0, jsonPath.getInt("response.status"));
        return jsonPath.getString("response.id");
    }

    protected static List<String> getWebConfigIds(final String namePrefix) {
        final String response = getJsonResponse("/api/admin/webconfig/settings");
        final List<String> idList = JsonPath.from(response).getList(getResponsePath(namePrefix) + ".id");
        return idList;
    }

### Getest

* 100% <abbr title="De hoeveelheid code die automatisch wordt getest">van de code is getest</abbr>.
* 100% <abbr title="Python type annotaties, hiermee kunnen je editor en externe tools je beter ondersteunen">type geannoteerde</abbr> codebase.

        "addAll(n, allPresent) should return true",
        getList().addAll(0, MinimalCollection.of(e0())));
    expectAdded(0, e0());
  }

  @ListFeature.Require(absent = SUPPORTS_ADD_WITH_INDEX)
  @CollectionSize.Require(absent = ZERO)
  public void testAddAllAtIndex_unsupportedAllPresent() {
    assertThrows(
        UnsupportedOperationException.class, () -> getList().addAll(0, MinimalCollection.of(e0())));
    expectUnchanged();
  }

    assertEquals("::1", HostAndPort.fromString("[::1]:80").requireBracketsForIPv6().getHost());
    // Non-bracketed non-IPv6 works fine.
    assertEquals("x", HostAndPort.fromString("x").requireBracketsForIPv6().getHost());
    assertEquals("x", HostAndPort.fromString("x:80").requireBracketsForIPv6().getHost());

    // Non-bracketed IPv6 fails.
    assertThrows(

        resetCollection();
        return getList().listIterator();
      }

      @Override
      protected void verify(List<E> elements) {
        expectContents(elements);
      }
    }.test();
  }

  public void testListIterator_tooLow() {
    assertThrows(IndexOutOfBoundsException.class, () -> getList().listIterator(-1));
  }

  public void testListIterator_tooHigh() {

  @ListFeature.Require(SUPPORTS_SET)
  public void testReplaceAll() {
    getList().replaceAll(e -> samples.e3());
    expectContents(Collections.nCopies(getNumElements(), samples.e3()));
  }

  @ListFeature.Require(SUPPORTS_SET)
  public void testReplaceAll_changesSome() {
    getList().replaceAll(e -> e.equals(samples.e0()) ? samples.e3() : e);
    E[] expected = createSamplesArray();