Create CustomResource containing K8s objects, using fabric8 Kubernetes Java client

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I have deployed a CRD with limitRange as part of the spec:

              limitRange:
                properties:
                  limits: # array of 'limits' objects 
                    items:
                      properties:
                        default: # property of limit
                          additionalProperties:
                            anyOf:
                            - type: integer
                            - type: string
                            pattern: ^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$
                            x-kubernetes-int-or-string: true
                          description: ResourceList is a set of (resource name, quantity)
                            pairs.
                          type: object
                        defaultRequest: # property of limit
                          additionalProperties:
                            anyOf:
                            - type: integer
                            - type: string
                            pattern: ^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$
                            x-kubernetes-int-or-string: true
                          description: ResourceList is a set of (resource name, quantity)
                            pairs.
                          type: object
                        type: # property of limit
                          description: LimitType is a type of object that is limited.
                            It can be Pod, Container, PersistentVolumeClaim or a fully
                            qualified resource name.
                          type: string
                      type: object
                    type: array
                type: object

I’m having trouble creating a CustomResource in my Java code using the fabric8 client with the above spec. This is my code right now, it’s creating the CustomResource but not with the limitRange object:

LimitRangeSpec.java

public class LimitRangeSpec {
  private List<Limit> limits;

  public LimitRangeSpec(List<Limit> limits) {
    this.limits = limits;
  }
}

Limit.java

public class Limit {
  private DefaultLimit defaultLimit;
  private DefaultRequest defaultRequest;
  private String type;

  public Limit(DefaultLimit defaultLimit, DefaultRequest defaultRequest, String type) {
    this.defaultLimit = defaultLimit;
    this.defaultRequest = defaultRequest;
    this.type = type;
  }
}

DefaultRequest.java / DefaultLimit.java (same)

public class DefaultRequest {
  Map<String, Quantity> additionalProperties;

  public DefaultRequest(Map<String, Quantity> additionalProperties) {
    this.additionalProperties = additionalProperties;
  }

  public DefaultRequest() {
    this.additionalProperties = new HashMap<>();
  }

This is how i’m creating the CustomResource:

DefaultRequest defaultRequest = new DefaultRequest();
    Map<String, Quantity> defaultRequestAdditionalProperties = new HashMap<>();
    defaultRequestAdditionalProperties.put("cpu", new Quantity("500m"));
    defaultRequestAdditionalProperties.put("memory", new Quantity("2Gi"));
defaultRequest.setAdditionalProperties(defaultRequestAdditionalProperties);

Limit limit = new Limit(defaultLimit, defaultRequest, "Container");
LimitRangeSpec limitRange = new LimitRangeSpec(List.of(limit));
namespaceOperatorSpec.setLimitRange(limitRange);

namespaceOperator.setSpec(namespaceOperatorSpec);
NamespaceOperatorTest createdNamespaceOperator =
          nsOpClient.inNamespace("default").resource(namespaceOperator).create();

The CustomResource gets created but it doesn’t contain the LimitRange spec. Any idea on how I can get this to work? Thanks in advance