/** @return Owned values map. */
public Map<IgniteTxKey, CacheVersionedValue> ownedValues() {
return ownedVals == null
? Collections.<IgniteTxKey, CacheVersionedValue>emptyMap()
: Collections.unmodifiableMap(ownedVals);
}
/** @return Map of versions to be verified. */
public Map<IgniteTxKey, GridCacheVersion> dhtVersions() {
return dhtVers == null ? Collections.<IgniteTxKey, GridCacheVersion>emptyMap() : dhtVers;
}