How to use the mattermost-redux/utils/event_emitter.off function in mattermost-redux

componentWillUnmount() {
        this.mounted = false;
        EventEmitter.off('close_channel_drawer', this.closeChannelDrawer);
        EventEmitter.off(WebsocketEvents.CHANNEL_UPDATED, this.handleUpdateTitle);
        EventEmitter.off('renderDrawer', this.handleShowDrawerContent);
        EventEmitter.off(DeviceTypes.PERMANENT_SIDEBAR_SETTINGS, this.handlePermanentSidebar);
        BackHandler.removeEventListener('hardwareBackPress', this.handleAndroidBack);
        Dimensions.removeEventListener('change', this.handleDimensions);
    }

componentWillUnmount() {
        this.keyboardDidShowListener.remove();
        this.keyboardDidHideListener.remove();

        if (this.props.valueEvent) {
            EventEmitter.off(this.props.valueEvent, this.handleValueChange);
        }

        if (this.props.cursorPositionEvent) {
            EventEmitter.off(this.props.cursorPositionEvent, this.handleCursorPositionChange);
        }
    }

componentWillUnmount() {
        this.mounted = false;
        EventEmitter.off('close_settings_sidebar', this.closeSettingsSidebar);
        BackHandler.removeEventListener('hardwareBackPress', this.handleAndroidBack);
        Dimensions.removeEventListener('change', this.handleDimensions);
    }

componentWillUnmount() {
        EventEmitter.off('drawer_opacity', this.setOpacity);
    }

componentWillUnmount() {
        if (!this.props.excludeEvents) {
            EventEmitter.off(NavigationTypes.NAVIGATION_NO_TEAMS, this.handleNoTeams);
            EventEmitter.off(NavigationTypes.NAVIGATION_ERROR_TEAMS, this.errorTeamsList);
        }
    }

componentWillUnmount() {
        EventEmitter.off('scroll-to-bottom', this.handleSetScrollToBottom);

        if (this.animationFrameIndexFailed) {
            cancelAnimationFrame(this.animationFrameIndexFailed);
        }

        if (this.animationFrameInitialIndex) {
            cancelAnimationFrame(this.animationFrameInitialIndex);
        }
    }

componentWillUnmount() {
        this.mounted = false;
        EventEmitter.off('close_channel_drawer', this.closeChannelDrawer);
        EventEmitter.off(WebsocketEvents.CHANNEL_UPDATED, this.handleUpdateTitle);
        EventEmitter.off('renderDrawer', this.handleShowDrawerContent);
        EventEmitter.off(DeviceTypes.PERMANENT_SIDEBAR_SETTINGS, this.handlePermanentSidebar);
        BackHandler.removeEventListener('hardwareBackPress', this.handleAndroidBack);
        Dimensions.removeEventListener('change', this.handleDimensions);
    }

componentWillUnmount() {
        this.keyboardDidShowListener.remove();
        this.keyboardDidHideListener.remove();

        if (this.props.valueEvent) {
            EventEmitter.off(this.props.valueEvent, this.handleValueChange);
        }

        if (this.props.cursorPositionEvent) {
            EventEmitter.off(this.props.cursorPositionEvent, this.handleCursorPositionChange);
        }
    }

componentWillUnmount() {
        EventEmitter.off('leave_team', this.handleLeaveTeam);
    }

componentWillUnmount() {
        this.mounted = false;
        EventEmitter.off('close_channel_drawer', this.closeChannelDrawer);
        EventEmitter.off(WebsocketEvents.CHANNEL_UPDATED, this.handleUpdateTitle);
        EventEmitter.off('renderDrawer', this.handleShowDrawerContent);
        EventEmitter.off(DeviceTypes.PERMANENT_SIDEBAR_SETTINGS, this.handlePermanentSidebar);
        BackHandler.removeEventListener('hardwareBackPress', this.handleAndroidBack);
        Dimensions.removeEventListener('change', this.handleDimensions);
    }