docs: public Entry getChildEntry(final String pName) throws IOException {
          if (isFile() || rootNodeDId == -1) {
              return null;
          }
  
          Entry dummy = new Entry();
          dummy.name = pName;
          dummy.parent = this;
  
          SortedSet child = getChildEntries().tailSet(dummy);
          return (Entry) child.first();
      }