code: public void addModified(CmsClientSitemapEntry entry) {
  
          if (m_modifications.containsKey(entry.getId())) {
              m_modifications.remove(entry.getId());
          }
          m_modifications.put(entry.getId(), entry);
          checkMapSize(m_modifications);
      }
docs: Adds an entry to the modified list.<p>
  
  @param entry the entry to add