public String operator() {
        return this.operator;
    }
@return Represents the relationship between the container exit code(s) and the specified values. Containers completed with success (exit code 0) are excluded from the requirement check. Possible values are:

- In: the requirement is satisfied if at least one container exit code
  (might be multiple if there are multiple containers not restricted
  by the &#39;containerName&#39; field) is in the set of specified values.
- NotIn: the requirement is satisfied if at least one container exit code
  (might be multiple if there are multiple containers not restricted
  by the &#39;containerName&#39; field) is not in the set of specified values.
  Additional values are considered to be added in the future. Clients should react to an unknown operator by assuming the requirement is not satisfied.
sdk/java/src/main/java/com/pulumi/kubernetes/batch/v1/outputs/PodFailurePolicyOnExitCodesRequirement.java