/**
   * {@inheritDoc}
   *
   * @param ctx
   */
  @Override
  public void prepareMarshal(GridCacheSharedContext ctx) throws IgniteCheckedException {
    super.prepareMarshal(ctx);

    if (ownedVals != null) {
      ownedValKeys = ownedVals.keySet();

      ownedValVals = ownedVals.values();

      for (Map.Entry<IgniteTxKey, CacheVersionedValue> entry : ownedVals.entrySet()) {
        GridCacheContext cacheCtx = ctx.cacheContext(entry.getKey().cacheId());

        entry.getKey().prepareMarshal(cacheCtx);

        entry.getValue().prepareMarshal(cacheCtx.cacheObjectContext());
      }
    }

    if (retVal != null && retVal.cacheId() != 0) {
      GridCacheContext cctx = ctx.cacheContext(retVal.cacheId());

      assert cctx != null : retVal.cacheId();

      retVal.prepareMarshal(cctx);
    }

    if (filterFailedKeys != null) {
      for (IgniteTxKey key : filterFailedKeys) {
        GridCacheContext cctx = ctx.cacheContext(key.cacheId());

        key.prepareMarshal(cctx);
      }
    }
  }
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  /**
   * Adds owned versions to map.
   *
   * @param vers Map of owned versions.
   */
  public void ownedVersions(Map<IgniteTxKey, GridCacheVersion> vers) {
    if (F.isEmpty(vers)) return;

    if (owned == null) owned = new GridLeanMap<>(vers.size());

    owned.putAll(vers);
  }
  /**
   * Adds owned value.
   *
   * @param key Key.
   * @param ver DHT version.
   * @param val Value.
   */
  public void addOwnedValue(IgniteTxKey key, GridCacheVersion ver, CacheObject val) {
    if (val == null) return;

    if (ownedVals == null) ownedVals = new HashMap<>();

    CacheVersionedValue oVal = new CacheVersionedValue(val, ver);

    ownedVals.put(key, oVal);
  }
  /** {@inheritDoc} */
  @Override
  public void finishUnmarshal(GridCacheSharedContext ctx, ClassLoader ldr)
      throws IgniteCheckedException {
    super.finishUnmarshal(ctx, ldr);

    if (ownedValKeys != null && ownedVals == null) {
      ownedVals = U.newHashMap(ownedValKeys.size());

      assert ownedValKeys.size() == ownedValVals.size();

      Iterator<IgniteTxKey> keyIter = ownedValKeys.iterator();

      Iterator<CacheVersionedValue> valIter = ownedValVals.iterator();

      while (keyIter.hasNext()) {
        IgniteTxKey key = keyIter.next();

        GridCacheContext cctx = ctx.cacheContext(key.cacheId());

        CacheVersionedValue val = valIter.next();

        key.finishUnmarshal(cctx, ldr);

        val.finishUnmarshal(cctx, ldr);

        ownedVals.put(key, val);
      }
    }

    if (retVal != null && retVal.cacheId() != 0) {
      GridCacheContext cctx = ctx.cacheContext(retVal.cacheId());

      assert cctx != null : retVal.cacheId();

      retVal.finishUnmarshal(cctx, ldr);
    }

    if (filterFailedKeys != null) {
      for (IgniteTxKey key : filterFailedKeys) {
        GridCacheContext cctx = ctx.cacheContext(key.cacheId());

        key.finishUnmarshal(cctx, ldr);
      }
    }
  }
 /**
  * @param key Key.
  * @return {@code True} if response has owned value for given key.
  */
 public boolean hasOwnedValue(IgniteTxKey key) {
   return ownedVals != null && ownedVals.containsKey(key);
 }
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 /** {@inheritDoc} */
 @Override
 public GridCacheVersion ownedVersion(IgniteTxKey key) {
   return owned == null ? null : owned.get(key);
 }