code: public JComponent createButtonStack(final Size minimumButtonSize, final Border border) {
  		return createButtonStack(minimumButtonSize == null ? null : new ColumnSpec(minimumButtonSize), null, border);
  	}
docs: Create a button stack with buttons for all the commands.
  
  @param minimumButtonSize Minimum size of the buttons (can be
  <code>null</code>)
  @param border Border to set around the stack.
  @return never null