code: private boolean getBooleanInternal(final String key, final boolean defaultValue) {
  
  		boolean retVal = defaultValue;
  
  		synchronized (this.confData) {
  
  			final String value = this.confData.get(key);
  			if (value != null) {
  				retVal = Boolean.parseBoolean(value);
  			}
  		}
  
  		return retVal;
  	}
docs: Returns the value associated with the given key as a boolean.
  
  @param key
  the key pointing to the associated value
  @param defaultValue
  the default value which is returned in case there is no value associated with the given key
  @return the (default) value associated with the given key