How to use Lumen/Laravel custom service - php

Question

Im new to Lumen, I have managed to create and register the following ArangoDB service provider along with the service below and got it to work, but Im confused how I actually use them in another service or helper.
registered the provider in bootstrap/app.php
$app->register(App\Providers\ArangoServiceProvider::class);
ArangoServiceProvider.php
<?php
namespace App\Providers;
use Illuminate\Support\ServiceProvider;
class ArangoServiceProvider extends ServiceProvider
{
public function register()
{
$this->app->singleton('ArangoService', function ($app) {
return new ArangoService($app);
});
}
public function boot()
{
//
}
}
ArangoService.php
<?
namespace App\Services;
use ArangoDBClient\Collection as ArangoCollection;
use ArangoDBClient\CollectionHandler as ArangoCollectionHandler;
use ArangoDBClient\Connection as ArangoConnection;
use ArangoDBClient\ConnectionOptions as ArangoConnectionOptions;
use ArangoDBClient\DocumentHandler as ArangoDocumentHandler;
use ArangoDBClient\Document as ArangoDocument;
use ArangoDBClient\Exception as ArangoException;
use ArangoDBClient\Export as ArangoExport;
use ArangoDBClient\ConnectException as ArangoConnectException;
use ArangoDBClient\ClientException as ArangoClientException;
use ArangoDBClient\ServerException as ArangoServerException;
use ArangoDBClient\Statement as ArangoStatement;
use ArangoDBClient\UpdatePolicy as ArangoUpdatePolicy;
class ArangoService{
public function __construct() {
$connectionOptions = [
// database name
ArangoConnectionOptions::OPTION_DATABASE => 'dbname',
// server endpoint to connect to
ArangoConnectionOptions::OPTION_ENDPOINT => 'tcp://123456789',
// authorization type to use (currently supported: 'Basic')
ArangoConnectionOptions::OPTION_AUTH_TYPE => 'Basic',
// user for basic authorization
ArangoConnectionOptions::OPTION_AUTH_USER => 'root',
// password for basic authorization
ArangoConnectionOptions::OPTION_AUTH_PASSWD => 'passwd',
// connection persistence on server. can use either 'Close' (one-time connections) or 'Keep-Alive' (re-used connections)
ArangoConnectionOptions::OPTION_CONNECTION => 'Keep-Alive',
// connect timeout in seconds
ArangoConnectionOptions::OPTION_TIMEOUT => 3,
// whether or not to reconnect when a keep-alive connection has timed out on server
ArangoConnectionOptions::OPTION_RECONNECT => true,
// optionally create new collections when inserting documents
ArangoConnectionOptions::OPTION_CREATE => true,
// optionally create new collections when inserting documents
ArangoConnectionOptions::OPTION_UPDATE_POLICY => ArangoUpdatePolicy::LAST,
];
// turn on exception logging (logs to whatever PHP is configured)
ArangoException::enableLogging();
$connection = new ArangoConnection($connectionOptions);
$collectionHandler = new ArangoCollectionHandler($connection);
$handler = new ArangoDocumentHandler($connection);
}
public function main(){
print "hello world!<br/>";
}
}
This all above works, but how do I in a controller, call a service, lets call it "UsersService" that has functions like GetUser() , how does this "UsersService" use the $connection, $collectionHandler and $handler , that I have created in my ArangoDB service.
route pointing to a controller (got that one)
controller calling UsersService
UsersService using the arango service and passing something back to the controller
grateful for any help!