code: public List<PublicContractsItemsResponse> getContractsPublicItemsContractId(Integer contractId, String datasource,
              String ifNoneMatch, Integer page) throws ApiException {
          ApiResponse<List<PublicContractsItemsResponse>> resp = getContractsPublicItemsContractIdWithHttpInfo(
                  contractId, datasource, ifNoneMatch, page);
          return resp.getData();
      }
docs: Get public contract items Lists items of a public contract --- This route
  is cached for up to 3600 seconds
  
  @param contractId
  ID of a contract (required)
  @param datasource
  The server name you would like data from (optional, default to
  tranquility)
  @param ifNoneMatch
  ETag from a previous request. A 304 will be returned if this
  matches the current ETag (optional)
  @param page
  Which page of results to return (optional, default to 1)
  @return List&lt;PublicContractsItemsResponse&gt;
  @throws ApiException
  If fail to call the API, e.g. server error or cannot
  deserialize the response body