code: public String getText()
  	{
  		if(this.target == null)
  			throw new RequiredException("this.target in ReplaceTextDecorator");
  		
  		return Text.replaceForRegExprWith(this.target.getText(), regExp, replacement);
  	}
docs: replace the text based on a RegExpr
  @return Text.replaceForRegExprWith(this.target.getText(), regExp, replacement)