group.setCountVariable(new JRDesignVariable());
group.setGroupFooter(new JRDesignBand());
group.setGroupHeader(new JRDesignBand());
JRDesignExpression jrExpression = new JRDesignExpression();
jrExpression.setText(column.getTextForExpression());
jrExpression.setValueClassName(column.getValueClassNameForExpression());
group.setExpression(jrExpression);
group.setCountVariable(new JRDesignVariable());
return group;