docs: public ListPoliciesGrantingServiceAccessRequest withServiceNamespaces(String... serviceNamespaces) {
          if (this.serviceNamespaces == null) {
              setServiceNamespaces(new com.amazonaws.internal.SdkInternalList<String>(serviceNamespaces.length));
          }
          for (String ele : serviceNamespaces) {
              this.serviceNamespaces.add(ele);
          }
          return this;
      }