### Question:
HardLink { public static void createHardLinkMult(File parentDir, String[] fileBaseNames, File linkDir) throws IOException { createHardLinkMult(parentDir, fileBaseNames, linkDir, getHardLinkCommand.getMaxAllowedCmdArgLength()); } HardLink(); static void createHardLink(File file, File linkName); static void createHardLinkMult(File parentDir, String[] fileBaseNames, 
      File linkDir); static int getLinkCount(File fileName); static OSType osType; final LinkStats linkStats; }### Answer:
@Test public void testCreateHardLinkMult() throws IOException { String[] fileNames = src.list(); createHardLinkMult(src, fileNames, tgt_mult); assertEquals(2, getLinkCount(x1)); assertEquals(2, getLinkCount(x2)); assertEquals(2, getLinkCount(x3)); assertEquals(2, getLinkCount(x1_mult)); assertEquals(2, getLinkCount(x2_mult)); assertEquals(2, getLinkCount(x3_mult)); validateTgtMult(); appendToFile(x1_mult, str3); assertTrue(fetchFileContents(x1_mult).equals(str1 + str3)); assertTrue(fetchFileContents(x1).equals(str1 + str3)); }