Set<String> getInternalAttributeNames() {
    return Collections.unmodifiableSet(internalAttributeNames);
  }
returns true if the given name is annotated as an InternalConfigAttribute.
These attributes are used to hold internal, runtime objects such as
an auto-reconnect quorum checker and are not settable as distributed system
properties.
geode-core/src/main/java/org/apache/geode/distributed/internal/DistributionConfigImpl.java