public static void handleFullAsyncQueue(DiskEntry entry, InternalRegion region,
        VersionTag tag) {
      writeEntryToDisk(entry, region, tag, true);
    }
Writes the value of this {@code DiskEntry} to disk and {@code null} s out the reference to
the value to free up VM space.
<p>
Note that if the value had already been written to disk, it is not written again.
<p>
Caller must synchronize on entry and it is assumed the entry is evicted
geode-core/src/main/java/org/apache/geode/internal/cache/entries/DiskEntry.java