public void setExpectedKeyAndValue(Object key, Object value) {
      this.key = key;
      this.value = value;
      validationSuccessful = false;
    }
This method validates create operations. It verfies that entries are created and if entry
already exists, it throws EntryExistsException.
geode-core/src/integrationTest/java/org/apache/geode/internal/cache/PartitionedRegionSingleNodeOperationsJUnitTest.java