docs: protected void removeTypeConversions(String... types) {
  		for (final String type : types) {
  			final Iterator<ConversionMapping> iterator = this.conversions.iterator();
  			while (iterator.hasNext()) {
  				final ConversionMapping pair = iterator.next();
  				if (Strings.equal(pair.getSource(), type)) {
  					iterator.remove();
  					break;
  				}
  			}
  		}
  		refreshListUI();
  		this.list.refresh(true);
  		enableButtons();
  		preferenceValueChanged();
  	}