How to use the datax-query.KernelSelectors.getFetchingKernel function in datax-query

outputs: Selectors.getFlowOutputs(state),
    outputTemplates: Selectors.getFlowOutputTemplates(state),
    rules: Selectors.getFlowRules(state),

    // State
    selectedBatchIndex: Selectors.getSelectedBatchIndex(state),

    selectedReferenceDataIndex: Selectors.getSelectedReferenceDataIndex(state),
    selectedFunctionIndex: Selectors.getSelectedFunctionIndex(state),
    selectedSinkerIndex: Selectors.getSelectedSinkerIndex(state),
    selectedOutputTemplateIndex: Selectors.getSelectedOutputTemplateIndex(state),
    selectedRuleIndex: Selectors.getSelectedRuleIndex(state),
    isTestQueryOutputPanelVisible: LayoutSelectors.getTestQueryOutputPanelVisibility(state),
    kernelId: KernelSelectors.getKernelId(state),
    kernelVersion: KernelSelectors.getKernelVersion(state),
    fetchingKernel: KernelSelectors.getFetchingKernel(state),
    errorMessage: Selectors.getErrorMessage(state),
    warningMessage: Selectors.getWarningMessage(state),
    enableLocalOneBox: Selectors.getEnableLocalOneBox(state),

    // Validation
    infoValidated: Selectors.validateFlowInfo(state),
    inputValidated: Selectors.validateFlowInput(state),
    referenceDataValidated: Selectors.validateFlowReferenceData(state),
    functionsValidated: Selectors.validateFlowFunctions(state),
    scaleValidated: Selectors.validateFlowScale(state),
    outputsValidated: Selectors.validateFlowOutputs(state),
    rulesValidated: Selectors.validateFlowRules(state),
    flowValidated: Selectors.validateFlow(state),
    queryValidated: QuerySelectors.validateQueryTab(state),
    scheduleValidated: Selectors.validateFlowSchedule(state)
});