static void verifyOffHeapFreeListCount(int tinyFreeListCount) {
    if (tinyFreeListCount <= 0) {
      throw new IllegalStateException(
          GeodeGlossary.GEMFIRE_PREFIX + "OFF_HEAP_FREE_LIST_COUNT must be >= 1.");
    }
  }
Unit tests override this method to get better test coverage
geode-core/src/main/java/org/apache/geode/internal/offheap/FreeListManager.java