You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: client.go
    path of file: ./repos/juju/api/controller/usersecrets
    
    the code of the file until where you have to start completion: // Copyright 2023 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.

package usersecrets

import (
	"github.com/juju
    
func (c *Client) DeleteRevisions(uri *secrets.URI, revisions ...int) error {
	if uri == nil {
		return errors.Errorf("uri cannot be nil")
	}
	if len(revisions) == 0 {
		return errors.Errorf("at least one revision must be specified")
	}
	arg := params.DeleteSecretArg{
		URI:       uri.String(),
		Revisions: revisions,
	}

	var results params.ErrorResults
	err := c.facade.FacadeCall("DeleteRevisions", params.DeleteSecretArgs{Args: []params.DeleteSecretArg{arg}}, &results)
	if err != nil {
		return errors.Trace(err)
	}
	if len(results.Results) != 1 {
		return errors.Errorf("unexpected number of results: %d", len(results.Results))
	}
	result := results.Results[0]
	if result.Error != nil {
		return params.TranslateWellKnownError(result.Error)
	}
	return nil
}