code: func (r Network_Storage) DeleteFiles(fileIds []string) (resp bool, err error) {
  	params := []interface{}{
  		fileIds,
  	}
  	err = r.Session.DoRequest("SoftLayer_Network_Storage", "deleteFiles", params, &r.Options, &resp)
  	return
  }
docs: // {{CloudLayerOnlyMethod}} Delete multiple files within a Storage account. Depending on the type of Storage account, Deleting either deletes files permanently or sends files to your account's recycle bin.
  //
  // Currently, Virtual Server storage is the only type of Storage account that sends files to a recycle bin when deleted. When called against a Virtual Server storage account , this method also determines if the files are in the account's recycle bin. If the files exist in the recycle bin, then they are permanently deleted.
  //
  // Please note, files can not be restored once they are permanently deleted.