public boolean localCacheContainsKey(Object key) {
    return getRegionMap().containsKey(key);
  }
Test Method: Investigate the local cache to determine if it contains a the key

@param key The key
@return true if the key exists
@see LocalRegion#containsKey(Object)
geode-core/src/main/java/org/apache/geode/internal/cache/PartitionedRegion.java