code: protected function resolve($name, bool $new = false)
      {
          // resolve alias
          $name = $this->getAlias($name);
  
          // TODO : il faudrait aussi vérifier si $new est à false avant de rentrer dans ce test. non ????
          if (array_key_exists($name, $this->services)) {
              return $this->services[$name];
          }
          if (! array_key_exists($name, $this->definitions)) {
              if (! class_exists($name)) {
                  throw new EntityNotFoundException("Service '$name' wasn't found in the dependency injection container");
              }
              $this->add($name);
          }
  
          $definition = $this->definitions[$name];
          //$definition = $this->getDefinition($name);
  
          $instance = $this->resolver->resolve($definition->getConcrete(), $definition->getAssigns());
          //$instance = $this->resolver->resolve($definition->getConcrete(), $this->convertAssign($definition->assigns));
  
          /*
          if (array_key_exists($name, $this->classes)) {
              //$instance = $this->resolver->build($this->classes[$name], $this->resolveArguments($definition->assigns));
              $instance = $this->resolver->resolve($this->classes[$name], $definition->assigns);
          } elseif (array_key_exists($name, $this->closures)) {
              //$instance = $this->resolver->call($this->closures[$name], $this->resolveArguments($definition->assigns));
              $instance = $this->resolver->resolve($this->closures[$name], $definition->assigns);
          }*/
  
          if ($definition->isShared() && $new === false) {
              $this->services[$name] = $instance;
          }
  
          return $instance;
      }
docs: @param string $name
  
  @return mixed|object