app/models/manageiq/providers/infra_manager/distributed_virtual_switch.rb
class ManageIQ::Providers::InfraManager::DistributedVirtualSwitch < Switch
belongs_to :ext_management_system, :foreign_key => :ems_id, :inverse_of => :distributed_virtual_switches, :class_name => "ManageIQ::Providers::InfraManager"
end