code: public String getFlexCacheKeyDump() {
  
          if (m_flexCache != null) {
              StringBuffer buffer = new StringBuffer();
              m_flexCache.dumpKeys(buffer);
              return buffer.toString();
          } else {
              return null;
          }
      }
docs: Gets a string containing all keys and variations currently in the flex cache, for debug purposes.<p>
  
  @return a debug information string with the flex cache data