code: public static Expression asString(List<String> properties) {
  		ExpressionToString toString = new ExpressionToString();
  		for (String property : properties) {
  			toString.withArgument(property + "=", property(self(), property));
  		}
  		return toString;
  	}
docs: Returns the string which was constructed from properties
  
  @param properties list of the properties
  @return new instance of the ExpressionToString