### Question:
CellId implements NodeProtoId, Serializable { public CellUsage getUsageOf(int i) { return usagesOf[i]; } CellId(LibId libId, CellName cellName, int cellIndex); IdManager getIdManager(); int numUsagesIn(); CellUsage getUsageIn(int i); int numUsagesOf(); CellUsage getUsageOf(int i); CellUsage getUsageIn(CellId protoId); int numExportIds(); ExportId getPortId(int chronIndex); ExportId newPortId(String externalId); ExportId randomExportId(String suggestedId); int newNodeId(); int newArcId(); Cell inDatabase(EDatabase database); String toString(); boolean isIcon(); boolean isSchematic(); static void main(String[] args); static final CellId[] NULL_ARRAY; final IdManager idManager; final LibId libId; final CellName cellName; final int cellIndex; }### Answer:
@Test public void testGetUsageOf() { System.out.println("getUsageOf"); int i = 1; CellId instance = cellId2; CellUsage expResult = u1_2; CellUsage result = instance.getUsageOf(i); assertSame(expResult, result); }