code: @Deprecated
      public final void reset(int start, int count)
      throws IllegalArgumentException
      {
          int len = 0;
          
          if (text != null) {
              len = text.length;
          }
          
          if (start < 0 || count < 0 || start > len - count) {
              throw new IllegalArgumentException();
          }
          
          textStart = start;
          textLimit = start + count;
  
          reset();
      }
docs: Reset the iterator to iterate over the given range of the text. Throws
  IllegalArgumentException if the range is outside of the bounds of the
  character array.
  
  @param start the index of the new first character over which to iterate
  @param count the new number of characters over which to iterate.
  @exception IllegalArgumentException If invalid arguments are passed.
  
  @deprecated This API is ICU internal only.
  @hide draft / provisional / internal are hidden on Android