Listing subgroups of a group (API)

Description

Listing subgroups of a group (API)

Proposal

Hello,

Why I cannot list subgroups of a group?

If I request: https://gitlab.com/api/v4/groups/:id

All the projects of this group will be listed, but the projects of subgroups will be missing, and I cannot find a way to list the subgroups.

Links / references

/label ~"feature proposal"