code: public boolean containsKey(ResourceType type, PoolInfo poolInfo) {
      Map<PoolInfo, V> poolInfoMap = typePoolInfoMap.get(type);
      if (poolInfoMap == null) {
        return false;
      }
      return poolInfoMap.containsKey(poolInfo);
    }
docs: Is the value set with the appropriate keys?
  
  @param type Resource type
  @param poolInfo Pool info
  @return True if this map contains a mapping for the specified key, false
  otherwise