```ruby
module Aviator

  define_request :update_user do

    meta :provider,      :openstack
    meta :service,       :identity
    meta :api_version,   :v2
    meta :endpoint_type, :admin


    link 'documentation',
      'http://docs.openstack.org/api/openstack-identity-service/2.0/content/POST_updateUser_v2.0_users__userId__.html'

    link 'documentation bug',
      'https://bugs.launchpad.net/keystone/+bug/1226475'

    param :id,        required: true
    param :name,      required: false
    param :password,  required: false
    param :email,     required: false
    param :enabled,   required: false
    param :tenantId,  required: false


    def body
      p = {
        user: {}
      }

      optional_params.each do |key|
        p[:user][key] = params[key] if params[key]
      end

      p
    end


    def headers
      h = {}

      unless self.anonymous?
        h['X-Auth-Token'] = session_data[:access][:token][:id]
      end

      h
    end


    def http_method
      :put
    end


    def url
      service_spec = session_data[:access][:serviceCatalog].find { |s| s[:type] == 'identity' }
      "#{ service_spec[:endpoints][0][:adminURL] }/users/#{ params[:id] }"
    end

  end

end
```

Change hardcoded 'identity' to service.to_s
user
```ruby
module Aviator

  define_request :update_user do

    meta :provider,      :openstack
    meta :service,       :identity
    meta :api_version,   :v2
    meta :endpoint_type, :admin


    link 'documentation',
      'http://docs.openstack.org/api/openstack-identity-service/2.0/content/POST_updateUser_v2.0_users__userId__.html'

    link 'documentation bug',
      'https://bugs.launchpad.net/keystone/+bug/1226475'

    param :id,        required: true
    param :name,      required: false
    param :password,  required: false
    param :email,     required: false
    param :enabled,   required: false
    param :tenantId,  required: false


    def body
      p = {
        user: {}
      }

      optional_params.each do |key|
        p[:user][key] = params[key] if params[key]
      end

      p
    end


    def headers
      h = {}

      unless self.anonymous?
        h['X-Auth-Token'] = session_data[:access][:token][:id]
      end

      h
    end


    def http_method
      :put
    end


    def url
      service_spec = session_data[:access][:serviceCatalog].find { |s| s[:type] == service.to_s }
      "#{ service_spec[:endpoints][0][:adminURL] }/users/#{ params[:id] }"
    end

  end

end
```
assistant