### Question:
OSMNode extends OSMWithTags { public boolean isMultiLevel() { return hasTag("highway") && "elevator".equals(getTag("highway")); }  String toString(); int getCapacity(); boolean isMultiLevel(); boolean hasTrafficLight();  }### Answer:
@Test public void testIsMultiLevel() { OSMNode node = new OSMNode(); assertFalse(node.isMultiLevel()); node.addTag("highway", "var"); assertFalse(node.isMultiLevel()); node.addTag("highway", "elevator"); assertTrue(node.isMultiLevel()); }