### Question:
CommonCourtDivisionUtils { public static String tryExtractDivisionNumber(String divisionCode) { if (!isTolerantlyValidCcDivisionCode(divisionCode)) { return null; } return __extractDivisionNumber(divisionCode); } private  CommonCourtDivisionUtils(); static boolean isStrictlyValidCcDivisionCode(String divisionCode); static boolean isTolerantlyValidCcDivisionCode(String divisionCode); static String tryExtractNonLocalType(String divisionCode); static String tryExtractNonLocalCode(String divisionCode); static String tryExtractDivisionTypeCode(String divisionCode); static String tryExtractDivisionNumber(String divisionCode);  }### Answer:
@Test public void extractDivisionNumber_3digit() { assertEquals("05", CommonCourtDivisionUtils.tryExtractDivisionNumber("556")); }
@Test public void extractDivisionNumber_4digit() { assertEquals("15", CommonCourtDivisionUtils.tryExtractDivisionNumber("1536")); }