@CustomType.Setter
        public Builder spec(ClusterTrustBundleSpec spec) {
            if (spec == null) {
              throw new MissingRequiredPropertyException("ClusterTrustBundle", "spec");
            }
            this.spec = spec;
            return this;
        }
@return spec contains the signer (if any) and trust anchors.
sdk/java/src/main/java/com/pulumi/kubernetes/certificates/v1beta1/outputs/ClusterTrustBundle.java