The GET /environments/{{envID}}/groups/{{groupID}} operation returns one specified group.

Parameter Description
include (string) Possible value is totalMemberCounts. When this query parameter is appended to the request, the results include the totalMemberCounts property. This property lists the total number of users added to the group. This includes users that are directly added to the group with POST /environments/{{envID}}/users/{{userID}}/memberOfGroups or added to the group through the userFilter property.