code: public ApiResponse<AllianceResponse> getAlliancesAllianceIdWithHttpInfo(Integer allianceId, String datasource,
              String ifNoneMatch) throws ApiException {
          com.squareup.okhttp.Call call = getAlliancesAllianceIdValidateBeforeCall(allianceId, datasource, ifNoneMatch,
                  null);
          Type localVarReturnType = new TypeToken<AllianceResponse>() {
          }.getType();
          return apiClient.execute(call, localVarReturnType);
      }
docs: Get alliance information Public information about an alliance --- This
  route is cached for up to 3600 seconds
  
  @param allianceId
  An EVE alliance ID (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)
  @return ApiResponse&lt;AllianceResponse&gt;
  @throws ApiException
  If fail to call the API, e.g. server error or cannot
  deserialize the response body