Is "META-INF/MANIFEST.MF" still required?

Writing my first non-helloworld Server plugin. I am publishing it on the marketplace. One step mentioned is to

Specify the Atlassian-Build-Date in your manifest

I don’t have that file in my source code generated with atlas-create-confluence-plugin. Is it still required? Thanks.

Apparently this file is generated during the building process not the initialisation process. Found it under target.