query calculateDistrictEnergy {
  calculateDistrictEnergy(
    request: {
      inputs: {
        calculationMethod: DESIGN
        selectedFluidSide1: { fluidId: 53, isGas: false, inputValue: null }
        selectedFluidSide2: { fluidId: 53, isGas: false, inputValue: null }
        coCurrent: false
        selectedHeatExchangers: [
            { heatExchangerInputType: CHILD, id: 378 },
            { heatExchangerInputType: CHILD, id: 379 },
            { heatExchangerInputType: CHILD, id: 388 },
            { heatExchangerInputType: CHILD, id: 401 },
            { heatExchangerInputType: CHILD, id: 412 },
            { heatExchangerInputType: CHILD, id: 413 },
            { heatExchangerInputType: CHILD, id: 414 },
            { heatExchangerInputType: CHILD, id: 491 },
            { heatExchangerInputType: CHILD, id: 492 },
            { heatExchangerInputType: CHILD, id: 493 },
            { heatExchangerInputType: CHILD, id: 543 },
            { heatExchangerInputType: CHILD, id: 546 },
            { heatExchangerInputType: CHILD, id: 550 },
            { heatExchangerInputType: CHILD, id: 499 },
            { heatExchangerInputType: CHILD, id: 743 },
            { heatExchangerInputType: CHILD, id: 658 },
            { heatExchangerInputType: CHILD, id: 973 },
            { heatExchangerInputType: CHILD, id: 1041 },
            { heatExchangerInputType: CHILD, id: 1087 }
        ]
        heatLoad:  {
           amount: 200
           unit: KILOWATT
        }
        inletTemperatureSide1:  {
           amount: 17
           unit: DEGREE_CELSIUS
        }
        inletTemperatureSide2:  {
           amount: 10
           unit: DEGREE_CELSIUS
        }
        outletTemperatureSide1:  {
           amount: 11
           unit: DEGREE_CELSIUS
        }
        outletTemperatureSide2:  {
           amount: 16
           unit: DEGREE_CELSIUS
        }
        flowSide1: null,
        flowSide2: null,
        maxPressureDropSide1:  {
           amount: 50
           unit: KILO_PASCAL
        }
        maxPressureDropSide2:  {
           amount: 50
           unit: KILO_PASCAL
        }
        numberOfPasses: null
        numberOfChannels11: null
        numberOfChannels12: null
        numberOfChannels21: null
        numberOfChannels22: null
        numberOfPlates: null
        portSwitch: true,
        isWeightedLoadCondition: false,
        loadWeightConditions:  []
      }
    }
  ) {
    calculationResult {
      results: results {
        heatExchanger {
          modelId
          modelName
        }
      }
    }
  }
}