code: public Optional<ExternalServiceAlertCondition> show(long policyId, long conditionId)
      {
          Optional<ExternalServiceAlertCondition> ret = Optional.absent();
          Collection<ExternalServiceAlertCondition> conditions = list(policyId);
          for(ExternalServiceAlertCondition condition : conditions)
          {
              if(condition.getId() == conditionId)
                  ret = Optional.of(condition);
          }
          return ret;
      }
docs: Returns the external service alert condition with the given id.
  <P>
  This is needed because the API does not contain an operation to get a condition using the id directly.
  @param policyId The id of the policy the condition belongs to
  @param conditionId The id of the external service alert condition to return
  @return The alert condition