public boolean pollIsInitialized() {
    return initialized;
  }
Polls the isInitialized state. Unlike {@link #isInitialized} it will not wait for it to become
initialized if it is in the middle of being initialized.

@since GemFire 5.7
geode-core/src/main/java/org/apache/geode/distributed/internal/DistributionAdvisor.java