code: static boolean requiresUnicodeUnescape(final char[] text, final int offset, final int len) {
  
          if (text == null) {
              return false;
          }
  
          final int max = (offset + len);
  
          for (int i = offset; i < max; i++) {
  
              final char c = text[i];
  
              if (c != ESCAPE_PREFIX || (i + 1) >= max) {
                  continue;
              }
  
              if (c == ESCAPE_PREFIX) {
  
                  final char c1 = text[i + 1];
  
                  if (c1 == ESCAPE_UHEXA_PREFIX2) {
                      // This can be a uhexa escape
                      return true;
                  }
  
              }
  
          }
  
          return false;
  
      }
docs: /*
  Determine whether we will need unicode unescape or not, so that we avoid creating a writer object
  if it is not needed.