createDirective bucket accepts only strings

[davidalekna]

Hello, thanks for great package! I have this situation where I need to access this.userId while declaring bucket, but bucket accepts strings only. Any suggestions how could I access user?

I'm seeking for the following behaviour.

  Slingshot.createDirective('directive', Slingshot.GoogleCloud, {
        bucket: () => Meteor.users.findOne(this.userId).companyId;
        acl: "public-read",
        authorize: () => {},
        key: (file, metaContext) => {}
  );

Thanks!