### Question:
CellId implements Serializable { public long getId() { return this.id; } CellId(int zoomLevel, long id); static long getLevelId(int zoomlevel, long id); long getLevelId(); static CellId fromLevelId(long levelId); long getId(); @Override boolean equals(Object o); @Override int hashCode(); @Override String toString(); int getZoomLevel();  }### Answer:
@Test public void testGetid() { CellId instance = new CellId(1,1L); long expResult = 1L; long result = instance.getId(); assertEquals(expResult, result); }