function page_manager_page_argument_form_settings_validate
Validate handler for argument settings.
File
- 
              page_manager/
plugins/ tasks/ page.admin.inc, line 1244  
Code
function page_manager_page_argument_form_settings_validate(&$form, &$form_state) {
  if ($function = ctools_plugin_get_function($form_state['plugin'], 'settings form validate')) {
    $function($form, $form_state);
  }
}