def METHOD_NAME(self, obj):
    """
    Return organization members.
    """
    def _create_user_list(user_list):
        users_list = []
        for u in user_list:
            try:
                profile = u.profile
            except UserProfile.DoesNotExist:
                profile = UserProfile.objects.create(user=u)
            users_list.append(
                {
                    "user": u.username,
                    "role": get_role_in_org(u, obj),
                    "first_name": u.first_name,
                    "last_name": u.last_name,
                    "gravatar": profile.gravatar,
                }
            )
        return users_list
    members = get_organization_members(obj) if obj else []
    owners = get_organization_owners(obj) if obj else []
    if owners and members:
        members = members.exclude(username__in=[user.username for user in owners])
    members_list = _create_user_list(members)
    owners_list = _create_user_list(owners)
    return owners_list + members_list