tree.setHeaderVisible(true);
tree.setLinesVisible(false);
CellEditor[] editors = new CellEditor[PROPS.length];
editors[0] = new TextCellEditor(tree);
editors[1] = new TextCellEditor(tree);
editors[2] = new TextCellEditor(tree);
// CheckStyle:MagicNumber| OFF
editors[3] = new TextCellEditor(tree);
// CheckStyle:MagicNumber| ON
viewer.setCellModifier(new CellModifier());
viewer.setCellEditors(editors);
}