public Builder threadCount(int threadCount) {
      this.threadCount = threadCount;
      return this;
    }
Specifies the number of threads in the pool. Creates fixed thread pool if &gt; 0. Default is
0
which means (non-fixed) cached thread pool.

@param threadCount the number of threads in the pool
@return a reference to this Builder
geode-dunit/src/main/java/org/apache/geode/test/dunit/rules/DistributedExecutorServiceRule.java