code: public String getLocalNodeVer() {
          CapsVersionAndHash capsVersionAndHash = getCapsVersionAndHash();
          if (capsVersionAndHash == null) {
              return null;
          }
          return entityNode + '#' + capsVersionAndHash.version;
      }
docs: Returns the local entity's NodeVer (e.g.
  "http://www.igniterealtime.org/projects/smack/#66/0NaeaBKkwk85efJTGmU47vXI=
  )
  
  @return the local NodeVer