code: public static final PlanVersionNotFoundException planVersionNotFoundException(String planId, String version) {
          return new PlanVersionNotFoundException(Messages.i18n.format("PlanVersionDoesNotExist", planId, version)); //$NON-NLS-1$
      }
docs: Creates an exception from an plan id and version.
  @param planId the plan id
  @param version the version id
  @return the exception