public function get_item_schema() {

		$schema                                   = parent::get_item_schema();
		$schema['properties']['roles']['default'] = array( 'student' );

		/**
		 * Filter item schema for the studend controller.
		 *
		 * @since 1.0.0-beta.12
		 *
		 * @param array $schema Item schema data.
		 */
		return apply_filters( 'llms_rest_student_item_schema', $schema );

	}