code: public ApiResponse<OpportunitiesGroupResponse> getOpportunitiesGroupsGroupIdWithHttpInfo(Integer groupId,
              String acceptLanguage, String datasource, String ifNoneMatch, String language) throws ApiException {
          com.squareup.okhttp.Call call = getOpportunitiesGroupsGroupIdValidateBeforeCall(groupId, acceptLanguage,
                  datasource, ifNoneMatch, language, null);
          Type localVarReturnType = new TypeToken<OpportunitiesGroupResponse>() {
          }.getType();
          return apiClient.execute(call, localVarReturnType);
      }
docs: Get opportunities group Return information of an opportunities group ---
  This route expires daily at 11:05
  
  @param groupId
  ID of an opportunities group (required)
  @param acceptLanguage
  Language to use in the response (optional, default to en-us)
  @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 language
  Language to use in the response, takes precedence over
  Accept-Language (optional, default to en-us)
  @return ApiResponse&lt;OpportunitiesGroupResponse&gt;
  @throws ApiException
  If fail to call the API, e.g. server error or cannot
  deserialize the response body