@Override
      public boolean isLowMemory() {
        return false;
      }
This enum (an abstract base class or ABC) and its enum constants (subclasses of the ABC)
play the role of "ConcreteState" classes in the GoF "State" pattern.

See {@link MemoryState} for details.
geode-core/src/main/java/org/apache/geode/cache/query/internal/QueryMonitor.java