assertCloseDoesNotModifyFile method was adapted from method with the same name in TestWorkbookFactory

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1736744 13f79535-47bb-0310-9956-ffa450edef68

src/testcases/org/apache/poi/ss/usermodel/BaseTestWorkbook.java

@@ -835,6 +835,7 @@ public abstract class BaseTestWorkbook {
         wb.close();
     }
     
+    /* FIXME copied from {@link org.apache.poi.ss.TestWorkbookFactory} */
     protected static void assertCloseDoesNotModifyFile(String filename, Workbook wb) throws IOException {
         final byte[] before = HSSFTestDataSamples.getTestDataFileContent(filename);
         wb.close();