private function create( $content ) {
		global $wpdb;

		$new_user_achievement = apply_filters(
			'lifterlms_new_achievement',
			array(
				'post_type'    => 'llms_my_achievement',
				'post_title'   => $this->title,
				'post_content' => $content,
				'post_status'  => 'publish',
				'post_author'  => 1,
			)
		);

		$new_user_achievement_id = wp_insert_post( $new_user_achievement, true );

		update_post_meta( $new_user_achievement_id, '_llms_achievement_title', $this->achievement_title );
		update_post_meta( $new_user_achievement_id, '_llms_achievement_image', $this->image );
		update_post_meta( $new_user_achievement_id, '_llms_achievement_content', $this->content );
		update_post_meta( $new_user_achievement_id, '_llms_achievement_template', $this->achievement_template_id );

		$user_metadatas = array(
			'_achievement_earned' => $new_user_achievement_id,
		);

		foreach ( $user_metadatas as $key => $value ) {
			$update_user_postmeta = $wpdb->insert(
				$wpdb->prefix . 'lifterlms_user_postmeta',
				array(
					'user_id'      => $this->userid,
					'post_id'      => $this->lesson_id,
					'meta_key'     => $key,
					'meta_value'   => $value,
					'updated_date' => current_time( 'mysql' ),
				)
			);
		}

		// This hook is documented in includes/class-llms-engagement-handler.php.
		do_action( 'llms_user_earned_achievement', $this->userid, $new_user_achievement_id, $this->lesson_id );

	}