public static void assertThreadIdToSequenceIdMapisNotNullButEmpty() {
    Map map = pool.getThreadIdToSequenceIdMap();
    assertNotNull(map);
    // I didn't change this method name for merge purposes, but because of the
    // marker, the map will contain one entry
    assertTrue(map.size() == 1);

  }
function to assert that the ThreadIdtoSequence id Map is not Null but is empty *
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/ha/PutAllDUnitTest.java