code: def tenant_quota_usages(request, tenant_id=None, targets=None):
      
      if not tenant_id:
          tenant_id = request.user.project_id
  
      disabled_quotas = get_disabled_quotas(request, targets)
      usages = QuotaUsage()
  
      futurist_utils.call_functions_parallel(
          (_get_tenant_compute_usages,
           [request, usages, disabled_quotas, tenant_id]),
          (_get_tenant_network_usages,
           [request, usages, disabled_quotas, tenant_id]),
          (_get_tenant_volume_usages,
           [request, usages, disabled_quotas, tenant_id]))
  
      return usages
docs: Get our quotas and construct our usage object.
  
      :param tenant_id: Target tenant ID. If no tenant_id is provided,
          a the request.user.project_id is assumed to be used.
      :param targets: A tuple of quota names to be retrieved.
          If unspecified, all quota and usage information is retrieved.