docs: public com.squareup.okhttp.Call getFleetsFleetIdAsync(Long fleetId, String datasource, String ifNoneMatch,
              String token, final ApiCallback<FleetResponse> callback) throws ApiException {
  
          com.squareup.okhttp.Call call = getFleetsFleetIdValidateBeforeCall(fleetId, datasource, ifNoneMatch, token,
                  callback);
          Type localVarReturnType = new TypeToken<FleetResponse>() {
          }.getType();
          apiClient.executeAsync(call, localVarReturnType, callback);
          return call;
      }