try {
            String intValue = fessConfig.get(intKey);
            assertEquals("123", intValue);

            String floatValue = fessConfig.get(floatKey);
            assertEquals("45.67", floatValue);
        } finally {
            System.clearProperty(Constants.FESS_CONFIG_PREFIX + intKey);
            System.clearProperty(Constants.FESS_CONFIG_PREFIX + floatKey);
        }

            defaultQuery.add(QueryBuilders.fuzzyQuery(fessConfig.getIndexFieldTitle(), text)
                    .boost(fessConfig.getQueryBoostFuzzyTitleAsDecimal().floatValue())
                    .prefixLength(fessConfig.getQueryBoostFuzzyTitlePrefixLengthAsInteger())
                    .transpositions(Constants.TRUE.equalsIgnoreCase(fessConfig.getQueryBoostFuzzyTitleTranspositions()))

                final int thumbnailHeight = (int) ((height > width ? width : height)
                        * fessConfig.getThumbnailHtmlImageThumbnailWidthAsInteger().floatValue() / width);
                final BufferedImage thumbnail = new BufferedImage(thumbnailWidth, thumbnailHeight, image.getType());
                thumbnail.getGraphics()

        assertEquals(Long.parseLong(expected), DocumentUtil.getValue(doc, "key1", Long.class).longValue());
        assertEquals(Float.parseFloat(expected), DocumentUtil.getValue(doc, "key1", Float.class).floatValue());
        assertEquals(Double.parseDouble(expected), DocumentUtil.getValue(doc, "key1", Double.class).doubleValue());

        assertNull(DocumentUtil.getValue(doc, "key2", String.class));
    }

    reverse(array, fromIndex, toIndex);
  }

  /**
   * Returns an array containing each value of {@code collection}, converted to a {@code float}
   * value in the manner of {@link Number#floatValue}.
   *
   * <p>Elements are copied from the argument collection as if by {@code collection.toArray()}.
   * Calling this method is as thread-safe as calling that method.
   *