Content

Content

array(
        'type'    => 'content',
        'content' => 'This section is empty, add some options...',
    ),

array(
    'type' => 'content',
    'callback_hook' => 'your_plugin_callback_hook',
);

do_action('your_plugin_callback_hook','your_plugin_callback_render');

function your_plugin_callback_render($field_class){
    echo 'Output From Content Hook Callback';
}