Save machine index entries remotely

lib/vagrant/machine_index/remote.rb

@@ -67,7 +67,8 @@ module Vagrant
       # @param [Entry] entry
       # @return [Entry]
       def set(entry)
-        entry.remote_machine.save
+        entry.remote_machine.client.save
+        entry
       end
 
       def recover(entry)
@@ -76,13 +77,6 @@ module Vagrant
 
       protected
 
-      # Converts a machine index entry to a machine
-      #
-      # @param [Vagrant::MachineIndex::Entry] 
-      # @return [Hashicorp::Vagrant::Sdk::Args::Target]
-      def entry_to_machine(entry)
-      end
-
       # Converts a machine to a machine index entry
       #
       # @param [Hashicorp::Vagrant::Sdk::Args::Target]

plugins/commands/serve/client/machine.rb

@@ -24,6 +24,11 @@ module VagrantPlugins
           SDK::Ref::Machine.new(resource_id: resource_id)
         end
 
+        def save
+          req = Google::Protobuf::Empty.new
+          @client.save(req)
+        end
+
         # @return [String] machine name
         def get_name
           req = Google::Protobuf::Empty.new