systemHelper.addDesignJspFileName("xxx", "yyy");
        assertEquals("yyy", systemHelper.getDesignJspFileName("xxx"));
        final Pair<String, String>[] designJspFileNames = systemHelper.getDesignJspFileNames();
        assertEquals(1, designJspFileNames.length);
        assertEquals("xxx", designJspFileNames[0].getFirst());
        assertEquals("yyy", designJspFileNames[0].getSecond());
    }

attempt to auto-detect suitable values. Run it as

	go run detect.go

which will output something similar to

	export GOIOS_DEV_ID="iPhone Developer: xxx@yyy.zzz (XXXXXXXX)"
	export GOIOS_APP_ID=YYYYYYYY.some.bundle.id
	export GOIOS_TEAM_ID=ZZZZZZZZ

If you have multiple devices connected, specify the device UDID with the GOIOS_DEVICE_ID

    filtered.put("a", 1);
    filtered.put("b", 2);
    assertEquals(ImmutableMap.of("a", 1, "b", 2), filtered);

    assertThrows(IllegalArgumentException.class, () -> filtered.put("yyy", 3));
  }

  public void testFilteredKeysIllegalPutAll() {
    Map<String, Integer> unfiltered = createUnfiltered();
    Map<String, Integer> filtered = Maps.filterKeys(unfiltered, NOT_LENGTH_3);
    filtered.put("a", 1);

    filtered.put("a", 1);
    filtered.put("b", 2);
    assertEquals(ImmutableMap.of("a", 1, "b", 2), filtered);

    assertThrows(IllegalArgumentException.class, () -> filtered.put("yyy", 3));
  }

  public void testFilteredKeysIllegalPutAll() {
    Map<String, Integer> unfiltered = createUnfiltered();
    Map<String, Integer> filtered = Maps.filterKeys(unfiltered, NOT_LENGTH_3);
    filtered.put("a", 1);

            new TestStringSetGenerator() {
              @Override
              public Set<String> create(String[] elements) {
                Set<String> unfiltered = new LinkedHashSet<>();
                unfiltered.add("yyy");
                Collections.addAll(unfiltered, elements);
                unfiltered.add("zzz");
                return Sets.filter(unfiltered, Collections2Test.NOT_YYY_ZZZ);
              }
            })