+ /**
+ * Counts number of digit code points in the specified text.
+ *
+ * @param text input text
+ * @param start start index, inclusive
+ * @param end end index, exclusive
+ * @return number of digits found in the text in the specified range.
+ */
+ int32_t countDigits(const UnicodeString& text, int32_t start, int32_t end) const;
+