Mapping `group` in get_endurance_score()

[Taxuspt]

The get_endurance_score method returns a structure like:

{'userProfilePK': 1111111,
 'startDate': '2026-01-01',
 'endDate': '2026-01-28',
 'avg': 5642,
 'max': 5740,
 'groupMap': {'2026-01-01': {'groupAverage': 5558,
   'groupMax': 5587,
   'enduranceContributorDTOList': [{'activityTypeId': 3,
     'group': None,
     'contribution': 8.692857},
    {'activityTypeId': 3, 'group': None, 'contribution': 7.057143},
    {'activityTypeId': None, 'group': 0, 'contribution': 85.68428},
    {'activityTypeId': None, 'group': 1, 'contribution': 2.4385715},
    {'activityTypeId': None, 'group': 8, 'contribution': 3.9199998}]},
(...)

The activityTypeId can be mapped using the activity type mapping returned by get_activity_types() however I'm not being able to find a way to map group to an activity type or an activity group. E.g. Trail Running and Treadmill running will be mapped to the same group, but I need a way to get those groups.
Any ideas?