docs: public int size() {
  		writeLock.lock();
  		try {
  			if (this.size < 0) {
  				this.size = 0;
  				for (LinkedHashMap<String, String> value : this.values()) {
  					this.size += value.size();
  				}
  			}
  		} finally {
  			writeLock.unlock();
  		}
  		return this.size;
  	}