    # File lib/fog/openstack/volume.rb, line 48
            def initialize(options={})
              require 'multi_json'
              @openstack_username = options[:openstack_username]

              @data ||= { :users => {} }
              unless @data[:users].find {|u| u['name'] == options[:openstack_username]}
                id = Fog::Mock.random_numbers(6).to_s
                @data[:users][id] = {
                  'id'       => id,
                  'name'     => options[:openstack_username],
                  'email'    => "#{options[:openstack_username]}@mock.com",
                  'tenantId' => Fog::Mock.random_numbers(6).to_s,
                  'enabled'  => true
                }
              end
            end