/**
  * Save post metadata when a post of {@see $this->post_type} is saved.
  *
  * @param int     $post_id The ID of the post.
  * @param WP_Post $post    Post object
  *
  * @return void|bool
  */
 public function save_meta_boxes($post_id, $post)
 {
     if ($this->post_type !== $post->post_type) {
         return;
     }
     // If something wrong with nonce
     if (!array_key_exists($this->nonce_field, $_POST) || !wp_verify_nonce($_POST[$this->nonce_field], $this->nonce)) {
         return;
     }
     if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
         return;
     }
     if (!current_user_can('edit_post', $post_id)) {
         return;
     }
     // Save subtitle
     $meta_box_value = sanitize_text_field($_POST[$this->mb_subtitle_name]);
     update_post_meta($post_id, $this->mb_subtitle_name, $meta_box_value);
     unset($meta_box_value);
     // Save socials
     $meta_box_value = Appica_Helpers::process_social_networks($_POST[$this->mb_social_name]);
     update_post_meta($post_id, $this->mb_social_name, $meta_box_value);
     unset($meta_box_value);
 }