# Pastebin b1sIOydU
   added_roles = set()
   for role in roles:
       trust_role = TrustRole()
       trust_role.role_id = role['id']
       trust_role.trust_id = trust_id
       added_roles.add(role_id)
       session.add(trust_role)
    trust_dict = ref.to_dict()
    trust_dict['roles'] = [{'id': rid} for rid in added_roles]