private getFilteredRowCountValue(): number {
     let filteredRowCount = 0;
     this.gridApi.forEachNodeAfterFilter((node) => {
         if(!node.group) {
             filteredRowCount += 1
         }});
     return filteredRowCount;
 }

    @PostConstruct
    protected postConstruct(): void {
        super.postConstruct();

        // this component is only really useful with client side rowmodel
        if (this.gridApi.getModel().getType() !== 'clientSide') {
            console.warn(`ag-Grid: agFilteredRowCountComponent should only be used with the client side row model.`);
            return;
        }

        this.addCssClass('ag-status-panel');
        this.addCssClass('ag-status-panel-filtered-row-count');

        this.setVisible(true);

        const listener = this.onDataChanged.bind(this);
        this.eventService.addEventListener(Events.EVENT_MODEL_UPDATED, listener);
    }

    @PostConstruct
    protected postConstruct(): void {
        super.postConstruct();

        if (!this.isValidRowModel()) {
            console.warn(`ag-Grid: agSelectedRowCountComponent should only be used with the client and server side row model.`);
            return;
        }

        this.addCssClass('ag-status-panel');
        this.addCssClass('ag-status-panel-selected-row-count');

        const selectedRowCount = this.gridApi.getSelectedRows().length;
        this.setValue(selectedRowCount);
        this.setVisible(selectedRowCount > 0);

        let eventListener = this.onRowSelectionChanged.bind(this);
        this.eventService.addEventListener(Events.EVENT_MODEL_UPDATED, eventListener);
        this.eventService.addEventListener(Events.EVENT_SELECTION_CHANGED, eventListener);
    }

    // one grid initialisation, grap the APIs and auto resize the columns to fit the available space
    onGridReady(params): void {
        this.api = params.api;
        this.columnApi = params.columnApi;

        this.api.sizeColumnsToFit();
    }

 private getTotalRowCountValue(): number {
     let totalRowCount = 0;
     this.gridApi.forEachNode((node) => totalRowCount += 1);
     return totalRowCount;
 }

 private onRowSelectionChanged() {
     const selectedRowCount = this.gridApi.getSelectedRows().length;
     this.setValue(selectedRowCount);
     this.setVisible(selectedRowCount > 0);
 }

 private isValidRowModel() {
     // this component is only really useful with client or server side rowmodels
     const rowModelType = this.gridApi.getModel().getType();
     return rowModelType === 'clientSide' || rowModelType !== 'serverSide';
 }

    private getRowCountValue(): string {
        let totalRowCount = 0;
        this.gridApi.forEachNode((node) => totalRowCount += 1);

        return `${totalRowCount}`;
    }