### Question:
TLD { public static ByteSequence parseFieldAndValueFromTF(ByteSequence cq) { ArrayList<Integer> nulls = instancesOf(0, cq, 2); ArrayList<Integer> otherNulls = lastInstancesOf(0, cq, 1); final int startFn = otherNulls.get(0) + 1, stopFn = cq.length(); final int startFv = nulls.get(1) + 1, stopFv = otherNulls.get(0); byte[] fnFv = new byte[stopFn - startFn + 1 + stopFv - startFv]; System.arraycopy(cq.getBackingArray(), startFn + cq.offset(), fnFv, 0, stopFn - startFn); System.arraycopy(cq.getBackingArray(), startFv + cq.offset(), fnFv, stopFn - startFn + 1, stopFv - startFv); return new ArrayByteSequence(fnFv); } private  TLD(); static ByteSequence parsePointerFromFI(ByteSequence cq); static ByteSequence parseParentPointerFromId(ByteSequence id); static ByteSequence parseFieldAndValueFromFI(ByteSequence cf, ByteSequence cq); static ByteSequence parseFieldAndValueFromTF(ByteSequence cq); static ByteSequence parseRootPointerFromFI(ByteSequence cq); static ByteSequence parseRootPointerFromId(ByteSequence id); static String parseRootPointerFromId(String id); static ByteSequence estimateRootPointerFromId(ByteSequence id); static boolean isRootPointer(ByteSequence id); static ByteSequence fromString(String s); static ArrayList<Integer> instancesOf(int b, ByteSequence sequence); static ArrayList<Integer> instancesOf(int b, ByteSequence sequence, int repeat); static ArrayList<Integer> lastInstancesOf(int b, ByteSequence sequence, int repeat); static Key buildParentKey(Text shard, ByteSequence id, ByteSequence cq, Text cv, long ts); static Key getNextParentKey(Key docKey);  }### Answer:
@Test public void testParseFieldAndValueFromTF() { ByteSequence expected = new ArrayByteSequence(field + '\u0000' + value); Key tfKey = buildTFKey(rootId); ByteSequence parsed = TLD.parseFieldAndValueFromTF(tfKey.getColumnQualifierData()); assertEquals(expected, parsed); tfKey = buildTFKey(childId); parsed = TLD.parseFieldAndValueFromTF(tfKey.getColumnQualifierData()); assertEquals(expected, parsed); tfKey = buildTFKey(grandchildId); parsed = TLD.parseFieldAndValueFromTF(tfKey.getColumnQualifierData()); assertEquals(expected, parsed); }