docs: def delete_tenant(self, tenant):
          """
          ADMIN ONLY. Removes the tenant from the system. There is no 'undo'
          available, so you should be certain that the tenant specified is the
          tenant you wish to delete.
          """
          tenant_id = utils.get_id(tenant)
          uri = "tenants/%s" % tenant_id
          resp, resp_body = self.method_delete(uri)
          if resp.status_code == 404:
              raise exc.TenantNotFound("Tenant '%s' does not exist." % tenant)