Creating custom path in laravel

AppServiceProvider.php

public function boot()
{
    ...
    ...
    $this->app->bind('path.tenant', function () use ($tenant) {
          return "tenant_{$tenant->id}";
    });

    ...
}

composer.json

...

"autoload": {
    ...
    "files": ["app/Helpers/helpers.php"]
},

helpers.php

<?php

if (! function_exists('tenant_path')) {
    /**
     * Get the path to the tenant folder.
     *
     * @param  string  $path
     * @return string
     */
    function tenant_path($path = '')
    {
        return ""; //also not working
        return app()->make('path.tenant').($path ? DIRECTORY_SEPARATOR.ltrim($path, DIRECTORY_SEPARATOR) : $path);
    }
}

sample.php

<?php
    ...
    dd(tenant_path())