public Optional<String> operator() {
        return Optional.ofNullable(this.operator);
    }
@return Represents a key&#39;s relationship to a set of values. Valid operators are In, NotIn, Exists, DoesNotExist. Gt, and Lt.
sdk/java/src/main/java/com/pulumi/kubernetes/core/v1/outputs/NodeSelectorRequirementPatch.java