code: public boolean matches(String target, int start, int end) {
  		return this.matches(target, start, end, (Match) null);
  	}
docs: Checks whether the <var>target</var> text <strong>contains</strong> this
  pattern in specified range or not.
  
  @param start
  Start offset of the range.
  @param end
  End offset +1 of the range.
  @return true if the target is matched to this regular expression.