assertTrue(StringUtil.startsWithIgnoreCase("isHoge", "IS"));
        assertTrue(StringUtil.startsWithIgnoreCase("ISHoge", "is"));
        assertFalse(StringUtil.startsWithIgnoreCase("isHoge", "iss"));
        assertFalse(StringUtil.startsWithIgnoreCase("is", "iss"));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testSubstringFromLast() throws Exception {

      } else if (forceCopyElements) {
        this.elements = Arrays.copyOf(elements, elements.length);
        // we don't currently need to copy the counts array, because we don't use it directly
        // in built ISMs
      }
      forceCopyElements = false;
    }

    private void dedupAndCoalesce(boolean maybeExpand) {
      if (length == 0) {
        return;
      }