no user/preference api shows user assignment to groups or groups to user

[ssdhaliwal]

Request for standards API to support user/group properties:
1/ need to access list of groups user belongs to
2/ need to access list of users a group contains

lmize had provided the direct url for list of groups a user belongs to 'https://localhost:8443/owf/user/1' and review of network calls shows following 'https://localhost:8443/owf/group?user_id=1' but could not find these in API stack.

thanks.