code: static void addDiscoverInfoByNode(String nodeVer, DiscoverInfo info) {
          CAPS_CACHE.put(nodeVer, info);
  
          if (persistentCache != null)
              persistentCache.addDiscoverInfoByNodePersistent(nodeVer, info);
      }
docs: Add DiscoverInfo to the database.
  
  @param nodeVer
  The node and verification String (e.g.
  "http://psi-im.org#q07IKJEyjvHSyhy//CH0CxmKi8w=").
  @param info
  DiscoverInfo for the specified node.