code: public static StorageLevel create(
      boolean useDisk,
      boolean useMemory,
      boolean useOffHeap,
      boolean deserialized,
      int replication) {
      return StorageLevel.apply(useDisk, useMemory, useOffHeap, deserialized, replication);
    }
docs: Create a new StorageLevel object.
  @param useDisk saved to disk, if true
  @param useMemory saved to on-heap memory, if true
  @param useOffHeap saved to off-heap memory, if true
  @param deserialized saved as deserialized objects, if true
  @param replication replication factor