docs: public synchronized Object get(@Sensitive String key) {
  
          Object curEntry = primaryTable.get(key);
  
          // Not found in primary
          if (curEntry == null) {
              curEntry = secondaryTable.get(key);
  
              // Not found in primary or secondary
              if (curEntry == null) {
                  curEntry = tertiaryTable.get(key);
              }
          }
  
          return curEntry;
      }