code: public synchronized void setOption(String key, String value)
  	{
  		if (key == null || value == null) {
  			return;
  		}
  		config.put(key, value);
  	}
docs: Set a value to the backed properties in this
  module config.
  
  @param key The key of the property to set
  @param value The value of the property to set