private void write() {
          OffHeapStoredObject chunk = chunks.get(random.nextInt(chunks.size()));
          chunk.writeDataBytes(0, WRITE_BYTES);
        }
Writes canned data to a random Chunk from the Chunk list.
geode-core/src/integrationTest/java/org/apache/geode/internal/offheap/MemoryAllocatorFillPatternIntegrationTest.java