public boolean waitForInitialization(long ms) throws InterruptedException {
    return awaitInitialization(ms, TimeUnit.MILLISECONDS);
  }
Waits for the special statistics to be initialized. This overridden version of
{@link #waitForInitialization()} should always be used within tests.

@see #initSpecialStats
@since GemFire 7.0
geode-core/src/main/java/org/apache/geode/internal/statistics/HostStatSampler.java