Set<Object> expected = Maps.newHashMap(cache.asMap()).keySet();
      assertThat(keys).containsExactlyElementsIn(expected);
      assertThat(keys.toArray()).asList().containsExactlyElementsIn(expected);
      assertThat(keys.toArray(new Object[0])).asList().containsExactlyElementsIn(expected);

      new EqualsTester()
          .addEqualityGroup(cache.asMap().keySet(), keys)

      Set<Object> expected = Maps.newHashMap(cache.asMap()).keySet();
      assertThat(keys).containsExactlyElementsIn(expected);
      assertThat(keys.toArray()).asList().containsExactlyElementsIn(expected);
      assertThat(keys.toArray(new Object[0])).asList().containsExactlyElementsIn(expected);

      new EqualsTester()
          .addEqualityGroup(cache.asMap().keySet(), keys)

      return Maps.valueIterator(entrySet().iterator());
    }

    @Override
    public @Nullable Object[] toArray() {
      return standardToArray();
    }

    @Override
    @SuppressWarnings("nullness") // bug in our checker's handling of toArray signatures
    public <T extends @Nullable Object> T[] toArray(T[] array) {
      return standardToArray(array);
    }

    @Override
    public String toString() {

    assertThat(Floats.toArray(bytes)).isEqualTo(array);
    assertThat(Floats.toArray(shorts)).isEqualTo(array);
    assertThat(Floats.toArray(ints)).isEqualTo(array);
    assertThat(Floats.toArray(floats)).isEqualTo(array);
    assertThat(Floats.toArray(longs)).isEqualTo(array);
    assertThat(Floats.toArray(doubles)).isEqualTo(array);
  }

    assertThat(Ints.toArray(bytes)).isEqualTo(array);
    assertThat(Ints.toArray(shorts)).isEqualTo(array);
    assertThat(Ints.toArray(ints)).isEqualTo(array);
    assertThat(Ints.toArray(floats)).isEqualTo(array);
    assertThat(Ints.toArray(longs)).isEqualTo(array);
    assertThat(Ints.toArray(doubles)).isEqualTo(array);
  }

    assertThat(Doubles.toArray(bytes)).isEqualTo(array);
    assertThat(Doubles.toArray(shorts)).isEqualTo(array);
    assertThat(Doubles.toArray(ints)).isEqualTo(array);
    assertThat(Doubles.toArray(floats)).isEqualTo(array);
    assertThat(Doubles.toArray(longs)).isEqualTo(array);
    assertThat(Doubles.toArray(doubles)).isEqualTo(array);
  }

    assertThat(Floats.toArray(bytes)).isEqualTo(array);
    assertThat(Floats.toArray(shorts)).isEqualTo(array);
    assertThat(Floats.toArray(ints)).isEqualTo(array);
    assertThat(Floats.toArray(floats)).isEqualTo(array);
    assertThat(Floats.toArray(longs)).isEqualTo(array);
    assertThat(Floats.toArray(doubles)).isEqualTo(array);
  }

    assertThat(Longs.toArray(bytes)).isEqualTo(array);
    assertThat(Longs.toArray(shorts)).isEqualTo(array);
    assertThat(Longs.toArray(ints)).isEqualTo(array);
    assertThat(Longs.toArray(floats)).isEqualTo(array);
    assertThat(Longs.toArray(longs)).isEqualTo(array);
    assertThat(Longs.toArray(doubles)).isEqualTo(array);
  }

          Object[] result = standardToArray();
          return result;
        }

        @Override
        @SuppressWarnings("nullness") // b/192354773 in our checker affects toArray declarations
        public <T extends @Nullable Object> T[] toArray(T[] array) {
          return standardToArray(array);
        }
      };
    }

    private static <K, V extends @Nullable Object> Iterator<Entry<K, V>> transformEntries(

        if (StringUtil.isNotBlank(value)) {
            split(value, ",").of(stream -> stream.forEach(list::add));
        }
        return list.stream().filter(StringUtil::isNotBlank).map(String::trim).toArray(n -> new String[n]);
    }

    protected String[] getDefaultRolesAsArray() {
        final List<String> list = new ArrayList<>();
        final FessConfig fessConfig = ComponentUtil.getFessConfig();