code: public void updatePosition(final BitfinexPosition position) {
  		
  		synchronized (positions) {
  			// Replace position
  			positions.removeIf(p -> p.getCurrencyPair() == position.getCurrencyPair());
  			positions.add(position);
  			positions.notifyAll();
  		}
  		
  		notifyCallbacks(position);
  	}
docs: Update a exchange order
  @param position