public Optional<String> operator() {
        return Optional.ofNullable(this.operator);
    }
@return Operator represents a key&#39;s relationship to the value. Valid operators are Exists and Equal. Defaults to Equal. Exists is equivalent to wildcard for value, so that a pod can tolerate all taints of a particular category.
sdk/java/src/main/java/com/pulumi/kubernetes/core/v1/outputs/Toleration.java