code: @Override
    public int getRightLanguageCount(int node) {
      assert getFlags().contains(FSAFlags.NUMBERS) : "This FSA was not compiled with NUMBERS.";
      return decodeFromBytes(arcs, node, nodeDataLength);
    }
docs: Returns the number encoded at the given node. The number equals the count
  of the set of suffixes reachable from <code>node</code> (called its right
  language).