:::{default-domain} bzl :::
:::{bzl:currentfile} //lang:extension.bzl :::
Module extension
::::{bzl:module-extension} myext
:::{bzl:tag-class} mytag(ta1, ta2)
:attr ta1: {type}attr.string_list
ta1 doc :attr ta2: {type}attr.label_list
ta2 doc ::: ::::