public static PlanVersionAlreadyExistsException planVersionAlreadyExistsException(String planName, String version) {
        return new PlanVersionAlreadyExistsException(Messages.i18n.format("PlanVersionAlreadyExists", planName, version)); //$NON-NLS-1$
    }
Creates an exception from an plan name.
@param planName the plan name
@param version the version
@return the exception
manager/api/exceptions/src/main/java/io/apiman/manager/api/rest/exceptions/util/ExceptionFactory.java