code: public Adjustments getAccountAdjustments(final String accountCode, final Adjustments.AdjustmentType type, final Adjustments.AdjustmentState state, final QueryParams params) {
          final String url = Account.ACCOUNT_RESOURCE + "/" + accountCode + Adjustments.ADJUSTMENTS_RESOURCE;
  
          if (type != null) params.put("type", type.getType());
          if (state != null) params.put("state", state.getState());
  
          return doGET(url, Adjustments.class, params);
      }
docs: Get Account Adjustments
  <p>
  
  @param accountCode recurly account id
  @param type {@link com.ning.billing.recurly.model.Adjustments.AdjustmentType}
  @param state {@link com.ning.billing.recurly.model.Adjustments.AdjustmentState}
  @param params {@link QueryParams}
  @return the adjustments on the account