aliasColumn.setWidth(200);
propertyTree.setHeaderVisible(true);
propertyTree.setToolTipText("possible technical properties for the constraint");
descriptionText = new ResultItemViewText(composite, SWT.BORDER | SWT.MULTI);
gridData = new GridData();
gridData.horizontalSpan = 1;
gridData.verticalSpan = 2;
gridData.grabExcessHorizontalSpace = true;
gridData.grabExcessVerticalSpace = true;