protected function get_error_code( $code, $class ) {

		// See if the error code is a native php exception code constant.
		$ret = llms_php_error_constant_to_code( $code );

		// Code is not a native PHP exception code.
		if ( is_numeric( $ret ) ) {

			$reflect   = new ReflectionClass( $class );
			$constants = array_flip( $reflect->getConstants() );
			$ret       = isset( $constants[ $code ] ) ? $constants[ $code ] : 'ERROR_UNKNOWN';

		}

		/**
		 * Filter the human-readable error retrieved from a given error code
		 *
		 * @since 4.9.0
		 *
		 * @param string $ret   The human-readable error code.
		 * @param int    $code  The initial error code as an integer.
		 * @param obj    $class Generator class instance.
		 */
		return apply_filters( 'llms_generator_get_error_code', $ret, $code, $class );

	}