### Question:
StringUtils { public static String getString(Object obj) { if (obj != null) { return obj.toString(); } return null; } private  StringUtils(); static boolean isEmpty(String value); static boolean isQuote(char c); static boolean isWhitespace(String value, int index); static boolean isWhitespace(String value, int index, int end); static boolean isWhitespace(String value); static boolean isBlank(String value); static void normalizeSpace(String str, StringBuilder b); static String normalizeSpace(String str); static String getStartWhitespaces(String lineText); static String getWhitespaces(String text, int start, int end); static void trimNewLines(String value, StringBuilder s); static String trimNewLines(String value); static String lTrim(String value); static int getNumberOfNewLines(String text, boolean isWhitespace, String delimiter, int newLineLimit); static String getDefaultString(String text); static int getOffsetAfterWhitespace(String text, int endOffset); static int getFrontWhitespaceLength(String text); static int getTrailingWhitespaceLength(String text); static String cleanPathForWindows(String pathString); static String escapeBackticks(String text); static boolean isTagOutsideOfBackticks(String text); static String getString(Object obj); static int findStartWord(String text, int offset, Predicate<Character> isValidChar); static int findEndWord(String text, int offset, Predicate<Character> isValidChar); static String convertToQuotelessValue(String value); static boolean isQuoted(String value); static final String[] EMPTY_STRING; static final String TRUE; static final String FALSE; static final Collection<String> TRUE_FALSE_ARRAY; }### Answer:
@Test public void testGetString() { StringBuilder buffer = new StringBuilder(); String bufferText = "This is buffer text"; buffer.append(bufferText); assertEquals(bufferText, StringUtils.getString(buffer)); String regularText = "This is regular text"; assertEquals(regularText, StringUtils.getString(regularText)); }