docs: @SuppressWarnings("unchecked")
  	protected void removeCurrentTypeConversion() {
  		final IStructuredSelection selection = this.list.getStructuredSelection();
  		final String[] types = new String[selection.size()];
  		final Iterator<ConversionMapping> iter = selection.iterator();
  		int i = 0;
  		while (iter.hasNext()) {
  			types[i] = iter.next().getSource();
  			i++;
  		}
  		removeTypeConversions(types);
  	}