How to use the ag-grid-community/main.Events function in ag-grid-community

ToolPanelColumnGroupComp.prototype.init = function () {
        this.setTemplate(ToolPanelColumnGroupComp.TEMPLATE);
        this.eDragHandle = main_1._.createIconNoSpan('columnDrag', this.gridOptionsWrapper);
        main_1._.addCssClass(this.eDragHandle, 'ag-column-drag');
        this.cbSelect.getGui().insertAdjacentElement('afterend', this.eDragHandle);
        // this.displayName = this.columnGroup.getColGroupDef() ? this.columnGroup.getColGroupDef().headerName : null;
        this.displayName = this.columnController.getDisplayNameForOriginalColumnGroup(null, this.columnGroup, 'toolPanel');
        if (main_1._.missing(this.displayName)) {
            this.displayName = '>>';
        }
        this.eLabel.innerHTML = this.displayName ? this.displayName : '';
        this.setupExpandContract();
        this.addCssClass('ag-toolpanel-indent-' + this.columnDept);
        this.addDestroyableEventListener(this.eventService, main_1.Events.EVENT_COLUMN_PIVOT_MODE_CHANGED, this.onColumnStateChanged.bind(this));
        this.addDestroyableEventListener(this.eLabel, 'click', this.onLabelClicked.bind(this));
        this.addDestroyableEventListener(this.cbSelect, main_1.AgCheckbox.EVENT_CHANGED, this.onCheckboxChanged.bind(this));
        this.setOpenClosedIcons();
        this.setupDragging();
        this.onColumnStateChanged();
        this.addVisibilityListenersToAllChildren();
        main_1.CssClassApplier.addToolPanelClassesFromColDef(this.columnGroup.getColGroupDef(), this.getGui(), this.gridOptionsWrapper, null, this.columnGroup);
    };
    ToolPanelColumnGroupComp.prototype.addVisibilityListenersToAllChildren = function () {

ToolPanelColumnComp.prototype.init = function () {
        this.setTemplate(ToolPanelColumnComp.TEMPLATE);
        this.eDragHandle = main_1._.createIconNoSpan('columnDrag', this.gridOptionsWrapper);
        main_1._.addCssClass(this.eDragHandle, 'ag-column-drag');
        this.cbSelect.getGui().insertAdjacentElement('afterend', this.eDragHandle);
        this.displayName = this.columnController.getDisplayNameForColumn(this.column, 'toolPanel');
        var displayNameSanitised = main_1._.escape(this.displayName);
        this.eLabel.innerHTML = displayNameSanitised;
        // if grouping, we add an extra level of indent, to cater for expand/contract icons we need to indent for
        var indent = this.columnDept;
        if (this.groupsExist) {
            this.addCssClass('ag-toolpanel-add-group-indent');
        }
        this.addCssClass("ag-toolpanel-indent-" + indent);
        this.setupDragging();
        this.addDestroyableEventListener(this.eventService, main_1.Events.EVENT_COLUMN_PIVOT_MODE_CHANGED, this.onColumnStateChanged.bind(this));
        this.addDestroyableEventListener(this.column, main_1.Column.EVENT_VALUE_CHANGED, this.onColumnStateChanged.bind(this));
        this.addDestroyableEventListener(this.column, main_1.Column.EVENT_PIVOT_CHANGED, this.onColumnStateChanged.bind(this));
        this.addDestroyableEventListener(this.column, main_1.Column.EVENT_ROW_GROUP_CHANGED, this.onColumnStateChanged.bind(this));
        this.addDestroyableEventListener(this.column, main_1.Column.EVENT_VISIBLE_CHANGED, this.onColumnStateChanged.bind(this));
        this.addDestroyableEventListener(this.gridOptionsWrapper, 'functionsReadOnly', this.onColumnStateChanged.bind(this));
        this.addDestroyableEventListener(this.cbSelect, main_1.AgCheckbox.EVENT_CHANGED, this.onCheckboxChanged.bind(this));
        this.addDestroyableEventListener(this.eLabel, 'click', this.onLabelClicked.bind(this));
        this.onColumnStateChanged();
        main_1.CssClassApplier.addToolPanelClassesFromColDef(this.column.getColDef(), this.getGui(), this.gridOptionsWrapper, this.column, null);
    };
    ToolPanelColumnComp.prototype.onLabelClicked = function () {

gridOptionsWrapper: this.gridOptionsWrapper,
            eventService: this.eventService,
            context: this.getContext(),
            loggerFactory: this.loggerFactory,
            dragAndDropService: this.dragAndDropService
        });
        var localeTextFunc = this.gridOptionsWrapper.getLocaleTextFunc();
        var emptyMessage = localeTextFunc('rowGroupColumnsEmptyMessage', 'Drag here to set row groups');
        var title = localeTextFunc('groups', 'Row Groups');
        _super.prototype.init.call(this, {
            dragAndDropIcon: main_1.DragAndDropService.ICON_GROUP,
            icon: main_1._.createIconNoSpan('rowGroupPanel', this.gridOptionsWrapper, null),
            emptyMessage: emptyMessage,
            title: title
        });
        this.addDestroyableEventListener(this.eventService, main_1.Events.EVENT_COLUMN_ROW_GROUP_CHANGED, this.refreshGui.bind(this));
    };
    RowGroupDropZonePanel.prototype.isColumnDroppable = function (column) {

gridOptionsWrapper: this.gridOptionsWrapper,
            eventService: this.eventService,
            context: this.getContext(),
            loggerFactory: this.loggerFactory,
            dragAndDropService: this.dragAndDropService
        });
        var localeTextFunc = this.gridOptionsWrapper.getLocaleTextFunc();
        var emptyMessage = localeTextFunc('valueColumnsEmptyMessage', 'Drag here to aggregate');
        var title = localeTextFunc('values', 'Values');
        _super.prototype.init.call(this, {
            dragAndDropIcon: main_1.DragAndDropService.ICON_AGGREGATE,
            icon: main_1._.createIconNoSpan('valuePanel', this.gridOptionsWrapper, null),
            emptyMessage: emptyMessage,
            title: title
        });
        this.addDestroyableEventListener(this.eventService, main_1.Events.EVENT_COLUMN_VALUE_CHANGED, this.refreshGui.bind(this));
    };
    ValuesDropZonePanel.prototype.getIconName = function () {

GridHeaderDropZones.prototype.postConstruct = function () {
        this.setGui(this.createNorthPanel());
        this.eventService.addEventListener(main_1.Events.EVENT_COLUMN_ROW_GROUP_CHANGED, this.onRowGroupChanged.bind(this));
        this.eventService.addEventListener(main_1.Events.EVENT_COLUMN_EVERYTHING_CHANGED, this.onRowGroupChanged.bind(this));
        this.onRowGroupChanged();
    };
    GridHeaderDropZones.prototype.createNorthPanel = function () {

PivotDropZonePanel.prototype.updateColumns = function (columns) {
        if (this.gridOptionsWrapper.isFunctionsPassive()) {
            var event_1 = {
                type: main_1.Events.EVENT_COLUMN_PIVOT_CHANGE_REQUEST,
                columns: columns,
                api: this.gridApi,
                columnApi: this.columnApi
            };
            this.eventService.dispatchEvent(event_1);
        }
        else {
            this.columnController.setPivotColumns(columns, "toolPanelUi");
        }
    };
    PivotDropZonePanel.prototype.getIconName = function () {

PrimaryColsHeaderPanel.prototype.addEventListeners = function () {
        var _this = this;
        var eventsImpactingCheckedState = [
            main_1.Events.EVENT_COLUMN_EVERYTHING_CHANGED,
            main_1.Events.EVENT_COLUMN_PIVOT_CHANGED,
            main_1.Events.EVENT_COLUMN_PIVOT_MODE_CHANGED,
            main_1.Events.EVENT_COLUMN_ROW_GROUP_CHANGED,
            main_1.Events.EVENT_COLUMN_VALUE_CHANGED,
            main_1.Events.EVENT_COLUMN_VISIBLE,
            main_1.Events.EVENT_NEW_COLUMNS_LOADED
        ];
        eventsImpactingCheckedState.forEach(function (event) {
            _this.addDestroyableEventListener(_this.eventService, event, _this.setColumnsCheckedState.bind(_this));
        });
        this.addDestroyableEventListener(this.eventService, main_1.Events.EVENT_NEW_COLUMNS_LOADED, this.showOrHideOptions.bind(this));
    };
    PrimaryColsHeaderPanel.prototype.onFilterTextChanged = function () {

PivotModePanel.prototype.init = function () {
        this.setTemplate(this.createTemplate());
        this.cbPivotMode.setValue(this.columnController.isPivotMode());
        var localeTextFunc = this.gridOptionsWrapper.getLocaleTextFunc();
        this.cbPivotMode.setLabel(localeTextFunc('pivotMode', 'Pivot Mode'));
        this.addDestroyableEventListener(this.cbPivotMode, main_1.AgCheckbox.EVENT_CHANGED, this.onBtPivotMode.bind(this));
        this.addDestroyableEventListener(this.eventService, main_1.Events.EVENT_COLUMN_EVERYTHING_CHANGED, this.onPivotModeChanged.bind(this));
        this.addDestroyableEventListener(this.eventService, main_1.Events.EVENT_COLUMN_PIVOT_MODE_CHANGED, this.onPivotModeChanged.bind(this));
    };
    PivotModePanel.prototype.onBtPivotMode = function () {

context: this.getContext(),
            loggerFactory: this.loggerFactory,
            dragAndDropService: this.dragAndDropService
        });
        var localeTextFunc = this.gridOptionsWrapper.getLocaleTextFunc();
        var emptyMessage = localeTextFunc('pivotColumnsEmptyMessage', 'Drag here to set column labels');
        var title = localeTextFunc('pivots', 'Column Labels');
        _super.prototype.init.call(this, {
            dragAndDropIcon: main_1.DragAndDropService.ICON_GROUP,
            icon: main_1._.createIconNoSpan('pivotPanel', this.gridOptionsWrapper, null),
            emptyMessage: emptyMessage,
            title: title
        });
        this.addDestroyableEventListener(this.eventService, main_1.Events.EVENT_COLUMN_EVERYTHING_CHANGED, this.refresh.bind(this));
        this.addDestroyableEventListener(this.eventService, main_1.Events.EVENT_COLUMN_PIVOT_CHANGED, this.refresh.bind(this));
        this.addDestroyableEventListener(this.eventService, main_1.Events.EVENT_COLUMN_PIVOT_MODE_CHANGED, this.checkVisibility.bind(this));
        this.refresh();
    };
    PivotDropZonePanel.prototype.refresh = function () {

GridHeaderDropZones.prototype.postConstruct = function () {
        this.setGui(this.createNorthPanel());
        this.eventService.addEventListener(main_1.Events.EVENT_COLUMN_ROW_GROUP_CHANGED, this.onRowGroupChanged.bind(this));
        this.eventService.addEventListener(main_1.Events.EVENT_COLUMN_EVERYTHING_CHANGED, this.onRowGroupChanged.bind(this));
        this.onRowGroupChanged();
    };
    GridHeaderDropZones.prototype.createNorthPanel = function () {