Restriction children position modification in getChild(node,Type)

				switch (type)

				{

					case Generator:

						return getChild(node, 0);

						return getChildren(node, Node.Type.Generator).get(0);

					case Filter:

						return getChild(node, 1);

						List<Node> children = getChildren(node, Node.Type.Filter);

						if (children.isEmpty())

							throw new IllegalArgumentException("The Restriction node does not contain Filter nodes");

						return children.get(0);

				}

			case List:

				switch (type)