docs: def RebootInstance(r, instance, reboot_type=None, ignore_secondaries=False,
                     dry_run=False):
      """
      Reboots an instance.
  
      @type instance: str
      @param instance: instance to rebot
      @type reboot_type: str
      @param reboot_type: one of: hard, soft, full
      @type ignore_secondaries: bool
      @param ignore_secondaries: if True, ignores errors for the secondary node
              while re-assembling disks (in hard-reboot mode only)
      @type dry_run: bool
      @param dry_run: whether to perform a dry run
      """
  
      query = {
          "ignore_secondaries": ignore_secondaries,
          "dry-run": dry_run,
      }
  
      if reboot_type:
          if reboot_type not in ("hard", "soft", "full"):
              raise GanetiApiError("reboot_type must be one of 'hard',"
                                   " 'soft', or 'full'")
          query["type"] = reboot_type
  
      return r.request("post", "/2/instances/%s/reboot" % instance, query=query)