public function addClassArgument($name, $class, $required = true)
	{
		return $this->addArgument(new ClassArgument($this->argumentPosition++, $name, $class, $required));
	}
public function addClassArgument($name, $class, $required = true)
	{
		return $this->addArgument(new ClassArgument($this->argumentPosition++, $name, $class, $required));
	}
public function addClassArgument ( $ name , $ class , $ required = true ) { return $ this -> addArgument ( new ClassArgument ( $ this -> argumentPosition ++ , $ name , $ class , $ required ) ) ; }
Add a class argument to the factory definition.

@param string  $name
@param string  $class
@param boolean $required Optional - defaults to true
Add a class argument to the factory definition .