Add comment for implementation

plugins/providers/hyperv/cap/cleanup_disks.rb

@@ -25,6 +25,8 @@ module VagrantPlugins
         # @param [VagrantPlugins::Kernel_V2::VagrantConfigDisk] defined_disks
         # @param [Hash] disk_meta - A hash of all the previously defined disks from the last configure_disk action
         def self.handle_cleanup_disk(machine, defined_disks, disk_meta)
+          # Iterate over each disk_meta disk, check if it's still defined in the
+          # guests config, and if it's no longer there, remove it from the guest
         end
       end
     end