@Override
    public Object call() {
      getCache();
      return null;
    }
Test all the basic functionality of colocated transactions. This method invokes
{@link MyTransactionFunction} and tells it what to test, using different arguments.

@param redundantBuckets redundant buckets for colocated PRs
@param populateData if false tests are carried out on empty colocated PRs
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/execute/PRTransactionDUnitTest.java