code: public final boolean append(final String key, final Object value)
        throws TimeoutException, InterruptedException, MemcachedException {
      return this.append(key, value, this.opTimeout);
    }
docs: /*
  (non-Javadoc)
  
  @see net.rubyeye.xmemcached.MemcachedClient#append(java.lang.String, java.lang.Object)