    # File lib/fog/vsphere/models/compute/volumes.rb, line 14
            def all(filters = {})
              requires :vm
              case vm
                when Fog::Compute::Vsphere::Server
                  load service.list_vm_volumes(vm.id)
                when Fog::Compute::Vsphere::Template
                  load service.list_template_volumes(vm.id)
                else
                  raise 'volumes should have vm or template'
              end
            end