@SuppressWarnings("unused")
	public boolean isInvisibleRegion() {
		return getClusterProperties().getPropertyBoolean(PROP_CLUSTER_HIDDEN_REGION);
	}
Check if the current ngrinder instance is hidden instance from the cluster.

@return true if hidden.
ngrinder-controller/src/main/java/org/ngrinder/infra/config/Config.java