code: public List<Entry> getDirectChildren(Dn parent) throws NoSuchNodeException, MissingParentException {
          return extractEntriesFromCursor(searchOneLevel(parent));
      }
docs: Returns all entries found exactly one level below parent. Throws {@link NoSuchNodeException} if resolving the
  argument Dn fails at its leaf. Throws {@link MissingParentException} if resolving fails earlier.