How to copy email template in service desk project for customer from existing project?

[Artyom Mayerle]

I want to automate service desk project creation through copying of existing project as template.

Now i copy project with com.onresolve.scriptrunner.canned.jira.admin.CopyProject script but that not copied email templates.

Jira java api or rest api not allow change email templates programmatically or i can't find, where it is.

Other settings of project copies well.

How can i does it?