# 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