protected function get_generators() {

		/**
		 * Filter the list of available generators.
		 *
		 * @since Unknown
		 *
		 * @param array[] $generators Array of generators. Array key is the generator name and the array value is a callable function.
		 */
		return apply_filters(
			'llms_generators',
			array(
				'LifterLMS/BulkCourseExporter'    => array( $this->courses_generator, 'generate_courses' ),
				'LifterLMS/BulkCourseGenerator'   => array( $this->courses_generator, 'generate_courses' ),
				'LifterLMS/SingleCourseCloner'    => array( $this->courses_generator, 'clone_course' ),
				'LifterLMS/SingleCourseExporter'  => array( $this->courses_generator, 'generate_course' ),
				'LifterLMS/SingleCourseGenerator' => array( $this->courses_generator, 'generate_course' ),
				'LifterLMS/SingleLessonCloner'    => array( $this->courses_generator, 'clone_lesson' ),
			)
		);
	}