The latest major version is {40_version} and the corresponding distribution name is `40x` (with an "x" as the suffix).
For older releases use:

* `40x` for C* {40_version} series
* `311x` for C* {311_version} series
* `30x` for C* {30_version} series
* `22x` for C* {22_version} series
* `21x` for C* {21_version} series

For example, to add the repository for version {40_version} (`40x`):
