/**
  * Get post thumbnail.
  *
  * @since 1.0.2
  */
 public function get_avatar()
 {
     global $post;
     if (isset($this->atts['display_avatar']) && false === $this->atts['display_avatar']) {
         return;
     }
     $size = 50;
     if (!empty($this->atts['size'])) {
         $size = $this->atts['size'];
     }
     $avatar = Cherry_Testimonials_Data::get_image($post->ID, $size);
     return apply_filters('cherry_testimonials_avatar_template_callbacks', $avatar, $post->ID, $this->atts);
 }