public void putNewEntry(final InternalRegion owner, final RegionEntry reentry)
      throws RegionClearedException {
    if (!op.guaranteesOldValue()) { // preserves oldValue for CM ops in clients
      basicSetOldValue(null);
    }
    makeCreate();
    setNewValueInRegion(owner, reentry, null);
  }
Put a newValue into the given, write synced, new, region entry.
geode-core/src/main/java/org/apache/geode/internal/cache/EntryEventImpl.java