@Test
public void testGetPkgPrefixesForCoarseMatch4() {

    // null or empty XLogMethods --> empty list
    assertThat(XLogUtils.getPkgPrefixesForCoarseMatchXLogMethods(null, 1).size(), is(0));
    assertThat(XLogUtils.getPkgPrefixesForCoarseMatchXLogMethods(new ArrayList<XLogMethod>(), 1)
            .size(), is(0));
}