Source:
<code>protected List<?> createOperationSet() { List<?> selection = getSelectedObjects(); if (selection.isEmpty() || !(selection.get(0) instanceof IGraphicalEditPart)) { selection = Collections.EMPTY_LIST; } else { selection = ToolUtilities.getSelectionWithoutDependants(selection); selection = Lists.newArrayList(Iterables.filter(selection, Predicates.not(Predicates.instanceOf(ConnectionEditPart.class)))); if (selection.size() < 3) { selection = Collections.EMPTY_LIST; } else { EditPart parent = ((EditPart) selection.get(0)).getParent(); int sideOfFirstSelection = PositionConstants.NONE; if (selection.get(0) instanceof IBorderItemEditPart) { sideOfFirstSelection = ((IBorderItemEditPart) selection.get(0)).getBorderItemLocator().getCurrentSideOfParent(); if (!isHorizontalAxisAuthorizedForBorderNode(sideOfFirstSelection) && !isVerticalAxisAuthorizedForBorderNode(sideOfFirstSelection)) { selection = Collections.EMPTY_LIST; } } for (int i = 1; i < selection.size(); i++) { EditPart part = (EditPart) selection.get(i); if (part.getParent() != parent) { selection = Collections.EMPTY_LIST; break; } else if (sideOfFirstSelection != PositionConstants.NONE && !isABorderNodeOnSameAxis(part, sideOfFirstSelection)) { selection = Collections.EMPTY_LIST; break; } else if (part instanceof IGraphicalEditPart) { EditPartQuery containerLayoutQuery = new EditPartQuery((IGraphicalEditPart) part); <START> if (containerLayoutQuery.isFreeFormContainerChildrenPresentation()) { <END> selection = Collections.EMPTY_LIST; break; } } } } } return selection; }</code><technical_language>a (!) is missing in condition if (!containerLayoutQuery.isFreeFormContainerChildrenPresentation()) {</technical_language>

Target:
protected List<?> createOperationSet() { List<?> selection = getSelectedObjects(); if (selection.isEmpty() || !(selection.get(0) instanceof IGraphicalEditPart)) { selection = Collections.EMPTY_LIST; } else { selection = ToolUtilities.getSelectionWithoutDependants(selection); selection = Lists.newArrayList(Iterables.filter(selection, Predicates.not(Predicates.instanceOf(ConnectionEditPart.class)))); if (selection.size() < 3) { selection = Collections.EMPTY_LIST; } else { EditPart parent = ((EditPart) selection.get(0)).getParent(); int sideOfFirstSelection = PositionConstants.NONE; if (selection.get(0) instanceof IBorderItemEditPart) { sideOfFirstSelection = ((IBorderItemEditPart) selection.get(0)).getBorderItemLocator().getCurrentSideOfParent(); if (!isHorizontalAxisAuthorizedForBorderNode(sideOfFirstSelection) && !isVerticalAxisAuthorizedForBorderNode(sideOfFirstSelection)) { selection = Collections.EMPTY_LIST; } } for (int i = 1; i < selection.size(); i++) { EditPart part = (EditPart) selection.get(i); if (part.getParent() != parent) { selection = Collections.EMPTY_LIST; break; } else if (sideOfFirstSelection != PositionConstants.NONE && !isABorderNodeOnSameAxis(part, sideOfFirstSelection)) { selection = Collections.EMPTY_LIST; break; } else if (part instanceof IGraphicalEditPart) { EditPartQuery containerLayoutQuery = new EditPartQuery((IGraphicalEditPart) part); if (!containerLayoutQuery.isFreeFormContainerChildrenPresentation()) { selection = Collections.EMPTY_LIST; break; } } } } } return selection; }