Scripting in the File Templates

I created issue some time ago: http://stackoverflow.com/questions/33068742/adding-remote-git-link-to-file-header-intellij-idea

I remembered about it, and with much more knowledge of how programming works, I returned to this question.

I checked Android Studio settings and found, that it's possible to use Live Templates in the File Templates.

There is a predefined function in the Live Templates: groovyScript("groovy code")

If it's possible to call to any script in the File Templates, please help me and tell how.