protected function processArgumentNull(Element $arg) {
		$definition = new stdClass();
		
		$definition->type  = 'value';
		$definition->value = null;
		
		return $definition;
	}
protected function processArgumentNull(Element $arg) {
		$definition = new stdClass();
		
		$definition->type  = 'value';
		$definition->value = null;
		
		return $definition;
	}
protected function processArgumentNull ( Element $ arg ) { $ definition = new stdClass ( ) ; $ definition -> type = 'value' ; $ definition -> value = null ; return $ definition ; }
Process "null" type argument

@param  Element $arg
@return stdClass
@throws InvalidConfig
Process null type argument