best way to hidden/disable the File Explorer feature ?

[icoco]

as topic, disable it ('File icon') display on left side panel , almost disable the feature but it can be available while required, maybe a option dynamic set it,
I try to use the 'Close' command but not been success. I think that maybe have another best approach, eg FilterContribution, code bellows:

import { bindContribution, ContributionFilterRegistry, Filter, FilterContribution } from "@theia/core";
import { injectable, interfaces } from "inversify";


import { WidgetFactory } from '@theia/core/lib/browser';

import { FileNavigatorContribution } from '@theia/navigator/lib/browser/navigator-contribution';
import { NavigatorDecoratorService } from '@theia/navigator/lib/browser/navigator-decorator-service';

import { NavigatorWidgetFactory } from '@theia/navigator/lib/browser/navigator-widget-factory';




@injectable()
export class DiscardFileExplorerContributionFilter implements FilterContribution {
    registerContributionFilters(registry: ContributionFilterRegistry): void {
        
        registry.addFilters("*", [
            (contrib) => !(contrib instanceof FileNavigatorContribution),
            (contrib) => !(contrib instanceof NavigatorDecoratorService), 
        ]);
        registry.addFilters(
            [WidgetFactory],
            [filterById(id => NavigatorWidgetFactory.ID !== id)]
        );

    }
}

function filterById(filter: Filter<string>): Filter<object & { id?: string }> {
  
    return (object =>{ 
          return  object.id ? filter(object.id) : true;
    }) 
}

export function bindSampleFilteredCommandContribution(bind: interfaces.Bind): void {
     
    bind(DiscardFileExplorerContributionFilter).toSelf().inSingletonScope();
    bindContribution(bind, DiscardFileExplorerContributionFilter, [FilterContribution]);
}

the 'File Explorer' still show in application, filter does not make effect

[msujew]

Closing this, it seems to be a duplicate of #16267.