code: public JComponent createButtonBar(final ColumnSpec columnSpec, final RowSpec rowSpec, final Border border) {
  		final ButtonBarGroupContainerPopulator container = new ButtonBarGroupContainerPopulator();
  		container.setColumnSpec(columnSpec);
  		container.setRowSpec(rowSpec);
  		addCommandsToGroupContainer(container);
  		return GuiStandardUtils.attachBorder(container.getButtonBar(), border);
  	}
docs: Create a button bar with buttons for all the commands in this.
  
  @param columnSpec Custom columnSpec for each column containing a button,
  can be <code>null</code>.
  @param rowSpec Custom rowspec for the buttonbar, can be <code>null</code>.
  @param border if null, then don't use a border
  
  @return never null