Issues while generating multiple files in an wizard

Hi,

I'm currently trying (again) to create multiple files in a single new project wizard.

I'm following the steps as described in https://blogs.oracle.com/geertjan/entry/multiple_files_from_a_single .

The main difference is that I'm using @TemplateRegistration annotations instead of the layer xml.

I'm able to create all files I'm interested in.

Unfortunately there are some side effects: All used templates show up in the new project list instead of just the wizard/ main template. 

IMO there are 2 options:

1) Hide all dependend templates in the new project selection

Question: Is it possible to hide registered templates in the New File/New Project wizard? 

2) Bypass the TemplateRegistration and use a different way for getting the FileObject of a template.

Question: Is it possible to get the FileObject for an registered template eg.  by its folder and name? Each template will be regsitered by a new file wizard, my new project wizard should just create multiple of those artefacts at once in an convinient way.

TIA + Best regards,