public boolean withStorage() {
    return this != EMPTY;
  }
Return true if regions with this policy store data locally.
<p>
Although DataPolicy {@link #PARTITION} will return true to this query, it is possible to turn
off local storage with {@link PartitionAttributesFactory#setLocalMaxMemory(int)} by setting
localMaxMemory to zero.

@return true if regions with this policy store data locally.
@see #NORMAL
@see #PRELOADED
@see #REPLICATE
@see #PERSISTENT_REPLICATE
@see #PARTITION
@see #PERSISTENT_PARTITION
geode-core/src/main/java/org/apache/geode/cache/DataPolicy.java