Function groupUser_add

groupUser_add(
groupID: number,
username: string,
): Promise<GroupMembershipResult<GroupMember>>
Adds an existing CUBE user to one group.
Parameters
- groupID: number
  Numeric CUBE group identifier.
- username: string
  Existing CUBE username.
Returns Promise<GroupMembershipResult<GroupMember>>
The created membership, or Err on failure.
- Defined in salsa/src/groups/index.ts:139