+ /**
+ * Constructor from a flattened set of RBBI data in memory which need not
+ * be malloced (e.g. it may be a memory-mapped file, etc.).
+ *
+ * This version does not adopt the memory, and does not
+ * free it when done.
+ * @internal
+ */
+ RuleBasedBreakIterator(const RBBIDataHeader* data, enum EDontAdopt dontAdopt, UErrorCode &status);
+