code: def direct_perms_for_user(cls, instance, user, db_session=None):
          
          db_session = get_db_session(db_session, instance)
          query = db_session.query(
              cls.models_proxy.UserResourcePermission.user_id,
              cls.models_proxy.UserResourcePermission.perm_name,
          )
          query = query.filter(cls.models_proxy.UserResourcePermission.user_id == user.id)
          query = query.filter(
              cls.models_proxy.UserResourcePermission.resource_id == instance.resource_id
          )
  
          perms = [
              PermissionTuple(user, row.perm_name, "user", None, instance, False, True)
              for row in query
          ]
  
          # include all perms if user is the owner of this resource
          if instance.owner_user_id == user.id:
              perms.append(
                  PermissionTuple(user, ALL_PERMISSIONS, "user", None, instance, True)
              )
          return perms
docs: returns permissions that given user has for this resource
              without ones inherited from groups that user belongs to
  
          :param instance:
          :param user:
          :param db_session:
          :return: