public String getLicensePlanId(String licenseName) {
    Office365License lic = getLicensePlan(licenseName);

    if (lic != null) {
      return lic.getSkuID();
    } else {
      return null;
    }
  }
  private void populateSKUs() {
    log.info("populateSKUs");
    this.licenses = new HashMap<String, Office365License>();
    this.servicePlanIDs = new HashMap<String, String>();

    JSONObject obj = getRequest("/subscribedSkus?api-version=" + Office365Connection.API_VERSION);
    try {
      JSONArray skus = obj.getJSONArray("value");
      for (int i = 0; i < skus.length(); i++) {
        JSONObject sku = skus.getJSONObject(i);

        String skuID = sku.getString("skuId");
        String skuPartNumber = sku.getString("skuPartNumber");

        Office365License license = new Office365License(skuID);
        license.setSkuPartNumber(skuPartNumber);
        license.setObjectID(sku.getString("objectId"));
        license.setConsumedUnits(sku.getInt("consumedUnits"));
        JSONObject prepaidUnits = sku.getJSONObject("prepaidUnits");
        license.setPrepaidUnitsEnabled(prepaidUnits.getInt("enabled"));
        license.setPrepaidUnitsSuspended(prepaidUnits.getInt("suspended"));
        license.setPrepaidUnitsWarning(prepaidUnits.getInt("warning"));

        JSONArray servicePlans = sku.getJSONArray("servicePlans");

        for (int j = 0; j < servicePlans.length(); j++) {
          JSONObject planObj = servicePlans.getJSONObject(j);
          String planID = planObj.getString("servicePlanId");
          String planName = planObj.getString("servicePlanName");
          Office365ServicePlan plan = new Office365ServicePlan(planID, planName);
          license.addServicePlan(plan);

          this.servicePlanIDs.put(planName, planID);
        }

        this.licenses.put(skuPartNumber, license);
      }
    } catch (JSONException je) {
      log.error(je, "Error populating skus");
    }
  }