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/* https://theme-fusion.com/forums/reply/reply-to-how-may-i-make-the-fusion-builder-feature-available-on-custom-posts/
Open up /wp-content/plugins/fusion-core/admin/class-pagebuilder.php - Look for line 53 */

var $allowed_post_types = array('page','post','avada_faq','avada_portfolio');