I am customising address field so need to add process function in address field element.
If I am using following code, then its adding process function but then I am not able to call protected function which are defined in address class in address field module.
$info['address']['#process'] = 'custom_feature_address_element_process';
If I am using following code, then its not working.
$info['address']['#process'] = array(0 => 'Drupal\customaddress\Element\CustomAddress', 1 => 'customprocessAddress');