+/** A byte-string represented as a sequence of chunks from a PageStore
+ *
+ * In order to save memory when taking memory snapshots, a given byte-string
+ * is split in fixed-size chunks. Identical chunks (either from the same
+ * snapshot or more probably from different snpashots) share the same memory
+ * storage.
+ *
+ * Thus a chunked is represented as a sequence of indices of each chunk.
+ */