Bug 194843 Cross tab Cube - Cannot delete a dimension using the cube builder
- Open the attached report design - Delete the "Region" group. Current behavior - Does now allow me to delete the group.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/command/ContentCommand.java
* descendants, otherwise false.
	 * 
	 * @param content
	 *            the content to handle
	 * @return true if content has descendants, otherwise false.
	 */
	private boolean hasDescendents( DesignElement content )
	{
		return element instanceof ReportDesign
				&& focus.getSlotID( ) == IModuleModel.COMPONENT_SLOT
				&& content.hasDerived( );
	}
	/**
	 * Does some transformation between template elements and report items or
	 * data sets. Virtually all elements must reside in a container. Containers
	 * are identified by a container ID.
	 * 
	 * @param from
	 *            the old element to replace
	 * @param to
	 *            the new element to replace
	 * @param slotID
	 *            the slot from which to replace the old element
	 * @param unresolveReference
	 *            status whether to un-resolve the references or set the
	 *            reference to null
	 * @throws SemanticException
	 *             if the old element cannot be replaced by the new element into
	 *             this container.
	 */