    # File lib/fog/openstack/requests/compute/list_usages.rb, line 23
            def list_usages(date_start = nil, date_end = nil, detailed=false)
              params = Hash.new
              response        = Excon::Response.new
              response.status = 200
              response.body   = {"tenant_usages"=>[{
                                   "total_memory_mb_usage" => 0.00036124444444444445,
                                   "total_vcpus_usage"     => 7.055555555555556e-07,
                                   "start"                 => "2012-03-06 05:05:56.349001",
                                   "tenant_id"             => "b97c8abba0c44a0987c63b858a4823e5",
                                   "stop"                  => "2012-03-06 05:05:56.349255",
                                   "total_hours"           => 7.055555555555556e-07,
                                   "total_local_gb_usage"  => 0.0
                                    }
                                  ]
                                }
              response
            end